{ "window": { "author": "kitlangton", "repository": "Effect-TS/effect", "from": "2026-09-02T17:50:37Z", "to": "2026-09-04T17:50:37Z", "query": "created:2026-09-02T17:50:37Z..2026-09-04T17:50:37Z", "total": 174, "merged": 143, "open": 23, "closedUnmerged": 8 }, "selection": "Concrete semantic failures and focused implementation corrections; editorial order, not severity rank.", "fixes": [ { "pr": 7655, "title": "fix(Stream): preserve large source chunks when rechunking", "url": "https://github.com/Effect-TS/effect/pull/7655", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:49:56Z", "mergedAt": "2026-09-03T01:08:27Z", "head": "86484819fd9054f8872939dbf0913c9823c63dd3", "files": [ { "filename": "packages/effect/src/Stream.ts", "patch": "@@ -6905,7 +6905,9 @@ export const rechunk: {\n if (chunk.length === 0 && arr.length === target) {\n return Effect.succeed(arr)\n } else if (chunk.length + arr.length < target) {\n- chunk.push(...arr)\n+ for (let i = 0; i < arr.length; i++) {\n+ chunk.push(arr[i])\n+ }\n return loop()\n }\n current = arr", "additions": 3, "deletions": 1 } ] }, { "pr": 7659, "title": "fix(Sink): preserve unconsumed leftovers in flatMap", "url": "https://github.com/Effect-TS/effect/pull/7659", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:50:05Z", "mergedAt": "2026-09-03T00:44:57Z", "head": "cb0fb2789914f580e23654fad636b9ca761cc112", "files": [ { "filename": "packages/effect/src/Sink.ts", "patch": "@@ -1247,7 +1247,12 @@ export const flatMap: {\n return upstream\n }),\n scope\n- )\n+ ).pipe(Effect.map((end): End => {\n+ if (!leftover) {\n+ return end\n+ }\n+ return [end[0], end[1] ? [...end[1], ...leftover] : leftover]\n+ }))\n )\n }))\n ", "additions": 6, "deletions": 1 } ] }, { "pr": 7782, "title": "fix(Order): retain finite criteria across comparisons", "url": "https://github.com/Effect-TS/effect/pull/7782", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T00:00:39Z", "mergedAt": "2026-09-03T04:38:28Z", "head": "c775d6a26fbd5d6832d4526a7d864f927ca69d54", "files": [ { "filename": "packages/effect/src/Order.ts", "patch": "@@ -368,6 +368,7 @@ export function alwaysEqual(): Order {\n *\n * Applies orders in iteration order and short-circuits on the first non-zero\n * result. It returns `0` only if all orders return `0`.\n+ * The collection is materialized when the order is created, so it must be finite.\n *\n * **Example** (Combining multiple Orders)\n *\n@@ -397,9 +398,10 @@ export function alwaysEqual(): Order {\n * @since 2.0.0\n */\n export function combineAll(collection: Iterable>): Order {\n+ const orders = Array.from(collection)\n return make((a1, a2) => {\n let out: Ordering = 0\n- for (const O of collection) {\n+ for (const O of orders) {\n out = O(a1, a2)\n if (out !== 0) {\n return out", "additions": 3, "deletions": 1 } ] }, { "pr": 7774, "title": "fix(Trie): preserve valued nodes during removal", "url": "https://github.com/Effect-TS/effect/pull/7774", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T23:59:36Z", "mergedAt": "2026-09-03T04:43:15Z", "head": "23c8256b6e535be0b7401159203575fa1e27a0f5", "files": [ { "filename": "packages/effect/src/internal/trie.ts", "patch": "@@ -516,7 +516,10 @@ export const remove = dual<\n const n2 = nStack[s]\n const d = dStack[s]\n const child = nStack[s + 1]\n- const nc = child.left === undefined && child.mid === undefined && child.right === undefined ? undefined : child\n+ const nc =\n+ child.value === undefined && child.left === undefined && child.mid === undefined && child.right === undefined\n+ ? undefined\n+ : child\n if (d === -1) {\n // left\n nStack[s] = {", "additions": 4, "deletions": 1 } ] }, { "pr": 7740, "title": "fix(effect): forward fallback atom writes to the primary atom", "url": "https://github.com/Effect-TS/effect/pull/7740", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:17Z", "mergedAt": "2026-09-03T04:54:48Z", "head": "54b54543764f53bef188bab3993f2573d117e3f1", "files": [ { "filename": "packages/effect/src/unstable/reactivity/Atom.ts", "patch": "@@ -1465,7 +1465,9 @@ export const withFallback: {\n return isWritable(self)\n ? writable(\n withFallback,\n- self.write,\n+ function(ctx, value) {\n+ ctx.set(self, value)\n+ },\n self.refresh ?? function(refresh) {\n refresh(self)\n }", "additions": 3, "deletions": 1 } ] }, { "pr": 7744, "title": "fix(atom-react): preserve notifications after switching refs", "url": "https://github.com/Effect-TS/effect/pull/7744", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:24Z", "mergedAt": "2026-09-03T04:57:01Z", "head": "d031a431d66ef91ad1b6ce85a60d92a21dbb2635", "files": [ { "filename": "packages/atom/react/src/Hooks.ts", "patch": "@@ -435,8 +435,8 @@ export const useAtomSubscribe = (\n * @since 4.0.0\n */\n export const useAtomRef = (ref: AtomRef.ReadonlyRef): A => {\n- const [, setValue] = React.useState(ref.value)\n- React.useEffect(() => ref.subscribe(setValue), [ref])\n+ const [, forceUpdate] = React.useReducer((n) => n + 1, 0)\n+ React.useEffect(() => ref.subscribe(forceUpdate), [ref])\n return ref.value\n }\n ", "additions": 2, "deletions": 2 } ] }, { "pr": 7915, "title": "fix(Effectable): evaluate Class with asEffect", "url": "https://github.com/Effect-TS/effect/pull/7915", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T14:18:29Z", "mergedAt": "2026-09-04T05:39:11Z", "head": "56446afbe2038ceecb96097367fed6f1a3b5a812", "files": [ { "filename": "packages/effect/src/Effectable.ts", "patch": "@@ -42,10 +42,10 @@ export const Prototype = >(options: {\n \n const Base: new() => Effect.Effect = (() => {\n const Base = function() {}\n- Base.prototype = Prototype({\n+ Base.prototype = Prototype>({\n label: \"Effectable\",\n evaluate(_) {\n- return this\n+ return this.asEffect()\n }\n })\n return Base as any\n@@ -64,5 +64,5 @@ const Base: new() => Effect.Effect = (() => {\n * @since 2.0.0\n */\n export abstract class Class extends Base {\n- abstract override: Effect.Effect\n+ abstract asEffect(): Effect.Effect\n }", "additions": 3, "deletions": 3 } ] }, { "pr": 7967, "title": "fix(FiberHandle): keep same-fiber registrations idempotent", "url": "https://github.com/Effect-TS/effect/pull/7967", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T23:49:14Z", "mergedAt": "2026-09-04T04:05:40Z", "head": "973668dd00f7d0623ede67f3381fbe021f7664a7", "files": [ { "filename": "packages/effect/src/FiberHandle.ts", "patch": "@@ -332,10 +332,10 @@ export const setUnsafe: {\n fiber.interruptUnsafe(internalFiberId)\n return\n } else if (self.state.fiber !== undefined) {\n- if (options?.onlyIfMissing === true) {\n- fiber.interruptUnsafe(internalFiberId)\n+ if (self.state.fiber === fiber) {\n return\n- } else if (self.state.fiber === fiber) {\n+ } else if (options?.onlyIfMissing === true) {\n+ fiber.interruptUnsafe(internalFiberId)\n return\n }\n self.state.fiber.interruptUnsafe(internalFiberId)", "additions": 3, "deletions": 3 }, { "filename": "packages/effect/src/FiberMap.ts", "patch": "@@ -305,7 +305,8 @@ const isInternalInterruption = Filter.toPredicate(Filter.compose(\n *\n * When the fiber completes, it is removed from the map. If the key already has\n * a fiber, that previous fiber is interrupted unless `onlyIfMissing` is set;\n- * in that case the new fiber is interrupted and the existing entry is kept.\n+ * in that case a different new fiber is interrupted and the existing entry is\n+ * kept, while re-registering the existing fiber is a no-op.\n *\n * **Example** (Adding a fiber unsafely)\n *\n@@ -367,10 +368,10 @@ export const setUnsafe: {\n \n const previous = MutableHashMap.get(self.state.backing, key)\n if (previous._tag === \"Some\") {\n- if (options?.onlyIfMissing === true) {\n- fiber.interruptUnsafe(internalFiberId)\n+ if (previous.value === fiber) {\n return\n- } else if (previous.value === fiber) {\n+ } else if (options?.onlyIfMissing === true) {\n+ fiber.interruptUnsafe(internalFiberId)\n return\n }\n }\n@@ -408,7 +409,8 @@ export const setUnsafe: {\n *\n * When the fiber completes, it is removed from the map. If the key already has\n * a fiber, that previous fiber is interrupted unless `onlyIfMissing` is set;\n- * in that case the new fiber is interrupted and the existing entry is kept.\n+ * in that case a different new fiber is interrupted and the existing entry is\n+ * kept, while re-registering the existing fiber is a no-op.\n *\n * This is the Effect-wrapped version of `setUnsafe`.\n *", "additions": 7, "deletions": 5 } ] }, { "pr": 7979, "title": "fix(RequestResolver): preserve tagged handler failure causes", "url": "https://github.com/Effect-TS/effect/pull/7979", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-04T02:32:42Z", "mergedAt": "2026-09-04T04:07:29Z", "head": "ac7ec7775b82875b32168b02584630adfd2fccee", "files": [ { "filename": "packages/effect/src/RequestResolver.ts", "patch": "@@ -17,7 +17,7 @@ import type * as Duration from \"./Duration.ts\"\n import * as Effect from \"./Effect.ts\"\n import * as Exit from \"./Exit.ts\"\n import { constTrue, dual, identity } from \"./Function.ts\"\n-import { exitFail, exitSucceed } from \"./internal/core.ts\"\n+import { exitSucceed } from \"./internal/core.ts\"\n import * as Count from \"./internal/count.ts\"\n import * as effect from \"./internal/effect.ts\"\n import * as internal from \"./internal/request.ts\"\n@@ -533,7 +533,7 @@ export const fromEffectTagged = {\n for (let i = 0; i < requests.length; i++) {\n const entry = requests[i]\n- entry.completeUnsafe(exitFail(cause) as any)\n+ entry.completeUnsafe(Exit.failCause(cause) as any)\n }\n },\n onSuccess: (res) => {", "additions": 2, "deletions": 2 } ] }, { "pr": 7981, "title": "fix(RequestResolver): consume tagged iterable results", "url": "https://github.com/Effect-TS/effect/pull/7981", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-04T02:32:50Z", "mergedAt": "2026-09-04T06:03:09Z", "head": "002a3639d0040033ebecaa18618bd54b77b99818", "files": [ { "filename": "packages/effect/src/RequestResolver.ts", "patch": "@@ -529,17 +529,18 @@ export const fromEffectTagged = \n- Effect.matchCause((fns[tag] as any)(requests) as Effect.Effect, unknown, unknown>, {\n+ Effect.matchCause((fns[tag] as any)(requests) as Effect.Effect, unknown, unknown>, {\n onFailure: (cause) => {\n for (let i = 0; i < requests.length; i++) {\n const entry = requests[i]\n entry.completeUnsafe(Exit.failCause(cause) as any)\n }\n },\n onSuccess: (res) => {\n- for (let i = 0; i < res.length; i++) {\n- const entry = requests[i]\n- entry.completeUnsafe(exitSucceed(res[i]) as any)\n+ let i = 0\n+ for (const result of res) {\n+ const entry = requests[i++]\n+ entry.completeUnsafe(exitSucceed(result) as any)\n }\n }\n }),", "additions": 5, "deletions": 4 } ] }, { "pr": 8020, "title": "fix(Effect): install cleanup before invoking use callbacks", "url": "https://github.com/Effect-TS/effect/pull/8020", "state": "OPEN", "isDraft": false, "createdAt": "2026-09-04T09:00:37Z", "mergedAt": null, "head": "9e96a770dea62222e9083dbb3cb50179d13c18ac", "files": [ { "filename": "packages/effect/src/internal/effect.ts", "patch": "@@ -4315,7 +4315,7 @@ export const acquireUseRelease = (\n uninterruptibleMask((restore) =>\n flatMap(acquire, (a) =>\n onExitPrimitive(\n- restore(use(a)),\n+ suspend(() => restore(use(a))),\n (exit) => release(a, exit),\n true\n ))\n@@ -6062,7 +6062,10 @@ export const useSpan: {\n const span = makeSpanUnsafe(fiber, name, options)\n const clock = fiber.getRef(ClockRef)\n const timingEnabled = fiber.getRef(TracerTimingEnabled)\n- return onExit(internalCall(() => evaluate(span)), (exit) => endSpan(span, exit, clock, timingEnabled))\n+ return onExit(\n+ suspend(() => internalCall(() => evaluate(span))),\n+ (exit) => endSpan(span, exit, clock, timingEnabled)\n+ )\n })\n }\n ", "additions": 5, "deletions": 2 } ] }, { "pr": 7991, "title": "fix(Metric): scope cached hooks to the selected registry", "url": "https://github.com/Effect-TS/effect/pull/7991", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-04T02:33:30Z", "mergedAt": "2026-09-04T06:02:51Z", "head": "ef952f49b841289d2ccdb63fc9a4226cb10e1721", "files": [ { "filename": "packages/effect/src/Metric.ts", "patch": "@@ -1660,8 +1660,7 @@ abstract class Metric$ implements Metric {\n declare readonly Input: Contravariant\n declare readonly State: Covariant\n \n- readonly #metadataCache = new WeakMap>()\n- #metadata: Metric.Metadata | undefined\n+ readonly #metadata = new WeakMap>()\n \n readonly id: string\n readonly description: string | undefined\n@@ -1693,20 +1692,15 @@ abstract class Metric$ implements Metric {\n \n hook(context: Context.Context): Metric.Hooks {\n const extraAttributes = Context.get(context, CurrentMetricAttributes)\n- if (Object.keys(extraAttributes).length === 0) {\n- if (Predicate.isNotUndefined(this.#metadata)) {\n- return this.#metadata.hooks\n- }\n- this.#metadata = this.getOrCreate(context, this.attributes)\n- return this.#metadata.hooks\n+ if (Object.keys(extraAttributes).length > 0) {\n+ return this.getOrCreate(context, mergeAttributes(this.attributes, extraAttributes)).hooks\n }\n- const mergedAttributes = mergeAttributes(this.attributes, extraAttributes)\n- let metadata = this.#metadataCache.get(mergedAttributes)\n- if (Predicate.isNotUndefined(metadata)) {\n- return metadata.hooks\n+ const registry = Context.get(context, MetricRegistry)\n+ let metadata = this.#metadata.get(registry)\n+ if (Predicate.isUndefined(metadata)) {\n+ metadata = this.getOrCreate(context, this.attributes)\n+ this.#metadata.set(registry, metadata)\n }\n- metadata = this.getOrCreate(context, mergedAttributes)\n- this.#metadataCache.set(mergedAttributes, metadata)\n return metadata.hooks\n }\n ", "additions": 8, "deletions": 14 } ] }, { "pr": 7993, "title": "fix(Metric): canonicalize attribute order in series keys", "url": "https://github.com/Effect-TS/effect/pull/7993", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-04T02:33:37Z", "mergedAt": "2026-09-04T05:45:22Z", "head": "4f2b1fef5abe0ece04659e47ddd1c0c5992817d1", "files": [ { "filename": "packages/effect/src/Metric.ts", "patch": "@@ -3503,7 +3503,9 @@ function makeHooks(\n }\n \n function serializeAttributes(attributes: Metric.Attributes): string {\n- return JSON.stringify(Array.isArray(attributes) ? attributes : Object.entries(attributes))\n+ const entries = Array.isArray(attributes) ? [...attributes] : Object.entries(attributes)\n+ entries.sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)\n+ return JSON.stringify(entries)\n }\n \n function mergeAttributes(", "additions": 3, "deletions": 1 } ] }, { "pr": 7961, "title": "fix(reactivity): honor explicit zero query TTL values", "url": "https://github.com/Effect-TS/effect/pull/7961", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T23:47:49Z", "mergedAt": "2026-09-04T05:43:18Z", "head": "8581c663e893196fe93742f8dfcb51b42f5e76fb", "files": [ { "filename": "packages/effect/src/unstable/reactivity/AtomHttpApi.ts", "patch": "@@ -312,7 +312,7 @@ export const Service =\n headers: request.headers,\n responseMode: request.responseMode ?? \"decoded-only\",\n reactivityKeys: request.reactivityKeys,\n- timeToLive: request.timeToLive\n+ timeToLive: request.timeToLive !== undefined\n ? Duration.fromInputUnsafe(request.timeToLive)\n : undefined,\n serializationKey: request.serializationKey", "additions": 1, "deletions": 1 }, { "filename": "packages/effect/src/unstable/reactivity/AtomRpc.ts", "patch": "@@ -275,7 +275,7 @@ export const Service = () =>\n ? Headers.fromInput(options.headers)\n : undefined,\n reactivityKeys: options?.reactivityKeys,\n- timeToLive: options?.timeToLive\n+ timeToLive: options?.timeToLive !== undefined\n ? Duration.fromInputUnsafe(options.timeToLive)\n : undefined,\n serializationKey: options?.serializationKey", "additions": 1, "deletions": 1 } ] }, { "pr": 7750, "title": "fix(effect): clear stale dynamic tool schemas when replacing parameters", "url": "https://github.com/Effect-TS/effect/pull/7750", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:36Z", "mergedAt": "2026-09-03T05:08:13Z", "head": "3b2caa2b729d2ced852e56ca187da7472f103453", "files": [ { "filename": "packages/effect/src/unstable/ai/Tool.ts", "patch": "@@ -1064,7 +1064,7 @@ const Proto = {\n return clone(this)\n },\n setParameters(this: Any, parametersSchema: Schema.Constraint) {\n- return clone(this, { parametersSchema })\n+ return clone(this, { parametersSchema, jsonSchema: undefined })\n },\n setSuccess(this: Any, successSchema: Schema.Constraint) {\n return clone(this, { successSchema })", "additions": 1, "deletions": 1 } ] }, { "pr": 7683, "title": "fix(RpcSerialization): retain falsy control IDs when decoding JSON-RPC", "url": "https://github.com/Effect-TS/effect/pull/7683", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:56:38Z", "mergedAt": "2026-09-03T03:57:25Z", "head": "9209cdd306a929ef702784e3e34a81b3b1524b98", "files": [ { "filename": "packages/effect/src/unstable/rpc/RpcSerialization.ts", "patch": "@@ -306,7 +306,7 @@ function decodeJsonRpcMessage(decoded: JsonRpcMessage): RpcMessage.FromClientEnc\n | RpcMessage.FromServerEncoded[\"_tag\"]\n | Exclude\n const requestId = (request as any).params?.requestId\n- return requestId ?\n+ return requestId !== undefined ?\n {\n _tag: tag,\n requestId", "additions": 1, "deletions": 1 } ] }, { "pr": 7677, "title": "fix(FetchHttpClient): set duplex for raw Web stream bodies", "url": "https://github.com/Effect-TS/effect/pull/7677", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:56:25Z", "mergedAt": "2026-09-03T00:54:32Z", "head": "1037dcb238520faf43c7d61276ded5fe8f1bdfb0", "files": [ { "filename": "packages/effect/src/unstable/http/FetchHttpClient.ts", "patch": "@@ -68,7 +68,7 @@ const fetch: HttpClient.HttpClient = HttpClient.make((request, url, signal, fibe\n method: request.method,\n headers,\n body,\n- duplex: request.body._tag === \"Stream\" ? \"half\" : undefined,\n+ duplex: typeof ReadableStream !== \"undefined\" && body instanceof ReadableStream ? \"half\" : undefined,\n signal\n } as any),\n catch: (cause) =>", "additions": 1, "deletions": 1 } ] }, { "pr": 7679, "title": "fix(HttpEffect): close request scopes for streaming HEAD responses", "url": "https://github.com/Effect-TS/effect/pull/7679", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:56:29Z", "mergedAt": "2026-09-03T01:37:08Z", "head": "708491deaeb49ba8394b8a6e65bf234534e0e7be", "files": [ { "filename": "packages/effect/src/unstable/http/HttpEffect.ts", "patch": "@@ -241,7 +241,7 @@ export const toWebHandlerWith = {\n- response = scopeTransferToStream(response)\n+ if (request.method !== \"HEAD\") response = scopeTransferToStream(response)\n ;(request as any)[resolveSymbol](\n Response.toWeb(response, { withoutBody: request.method === \"HEAD\", context })\n )", "additions": 1, "deletions": 1 } ] }, { "pr": 7693, "title": "fix(HttpMiddleware): preserve existing CORS Vary dimensions", "url": "https://github.com/Effect-TS/effect/pull/7693", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:57:01Z", "mergedAt": "2026-09-03T04:30:45Z", "head": "fd9dae95046edd863f2f8f4c524c4782d4c49a75", "files": [ { "filename": "packages/effect/src/unstable/http/HttpMiddleware.ts", "patch": "@@ -340,8 +340,8 @@ export const cors = (options?: {\n : (origin: string) => (opts.allowedOrigins as ReadonlyArray).includes(origin)\n \n const allowOrigin = typeof opts.allowedOrigins === \"function\" || opts.allowedOrigins.length > 1\n- ? ((originHeader: string) => {\n- if (!isAllowedOrigin(originHeader)) return undefined\n+ ? ((originHeader: string): ReadonlyRecord => {\n+ if (!isAllowedOrigin(originHeader)) return { vary: \"Origin\" }\n return {\n \"access-control-allow-origin\": originHeader,\n vary: \"Origin\"\n@@ -403,18 +403,36 @@ export const cors = (options?: {\n const headersFromRequestOptions = (request: HttpServerRequest) => {\n const origin = request.headers[\"origin\"]\n const accessControlRequestHeaders = request.headers[\"access-control-request-headers\"]\n- return Headers.fromRecordUnsafe({\n+ const headers = Headers.fromRecordUnsafe({\n ...allowOrigin(origin),\n ...allowCredentials,\n ...exposeHeaders,\n ...allowMethods,\n- ...allowHeaders(accessControlRequestHeaders),\n ...maxAge\n })\n+ const accessControlHeaders = allowHeaders(accessControlRequestHeaders)\n+ if (accessControlHeaders === undefined) return headers\n+ const vary = accessControlHeaders[\"vary\"]\n+ return Headers.setAll(\n+ headers,\n+ vary === undefined\n+ ? accessControlHeaders\n+ : {\n+ ...accessControlHeaders,\n+ vary: compressionInternal.varyWith(headers, vary)\n+ }\n+ )\n }\n \n- const preResponseHandler = (request: HttpServerRequest, response: HttpServerResponse) =>\n- Effect.succeed(Response.setHeaders(response, headersFromRequest(request)))\n+ const preResponseHandler = (request: HttpServerRequest, response: HttpServerResponse) => {\n+ const headers = headersFromRequest(request)\n+ return Effect.succeed(Response.setHeaders(\n+ response,\n+ headers[\"vary\"] === undefined\n+ ? headers\n+ : Headers.set(headers, \"vary\", compressionInternal.varyWith(response.headers, \"Origin\"))\n+ ))\n+ }\n \n return (\n httpApp: Effect.Effect\n@@ -566,8 +584,8 @@ export const compression = (\n }\n \n const withVary = (response: HttpServerResponse): HttpServerResponse => {\n- const vary = compressionInternal.varyAcceptEncoding(response.headers)\n- return vary === undefined ? response : Response.setHeader(response, \"vary\", vary)\n+ const vary = compressionInternal.varyWith(response.headers, \"Accept-Encoding\")\n+ return Response.setHeader(response, \"vary\", vary)\n }\n \n const defaultAlgorithms: ReadonlyArray = [\"br\", \"gzip\", \"deflate\"]", "additions": 26, "deletions": 8 }, { "filename": "packages/effect/src/unstable/http/internal/compression.ts", "patch": "@@ -7,15 +7,13 @@ import type { Compression, CompressionAlgorithm, CompressionOptions } from \"../H\n import * as Response from \"../HttpServerResponse.ts\"\n \n /** @internal */\n-export const varyAcceptEncoding = (headers: Headers.Headers): string | undefined => {\n+export const varyWith = (headers: Headers.Headers, dimension: string): string => {\n const vary = headers[\"vary\"]\n if (vary === undefined) {\n- return \"Accept-Encoding\"\n+ return dimension\n }\n const members = vary.split(\",\").map((member) => member.trim().toLowerCase())\n- return members.includes(\"*\") || members.includes(\"accept-encoding\")\n- ? undefined\n- : `${vary}, Accept-Encoding`\n+ return members.includes(\"*\") || members.includes(dimension.toLowerCase()) ? vary : `${vary}, ${dimension}`\n }\n \n /** @internal */\n@@ -26,10 +24,9 @@ export const wrapCompression = (impl: Compression): Compression => ({\n if (compressed === response) {\n return response\n }\n- const headers: Record = { \"content-encoding\": algorithm }\n- const vary = varyAcceptEncoding(compressed.headers)\n- if (vary !== undefined) {\n- headers[\"vary\"] = vary\n+ const headers: Record = {\n+ \"content-encoding\": algorithm,\n+ vary: varyWith(compressed.headers, \"Accept-Encoding\")\n }\n const etag = compressed.headers[\"etag\"]\n if (etag !== undefined && !etag.startsWith(\"W/\")) {", "additions": 6, "deletions": 9 } ] }, { "pr": 7701, "title": "fix(HttpApiClient): preserve base paths in URL builders", "url": "https://github.com/Effect-TS/effect/pull/7701", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:57:19Z", "mergedAt": "2026-09-03T03:51:33Z", "head": "78568c2a48dac0fde26e7dd14a19eecb3ac91f17", "files": [ { "filename": "packages/effect/src/unstable/httpapi/HttpApiClient.ts", "patch": "@@ -687,9 +687,20 @@ export const urlBuilder = (api: Api, options?: {\n const queryInput = request?.query === undefined\n ? undefined\n : (encodeQuery === undefined ? request.query : encodeQuery(request.query)) as UrlParams.Input\n- const query = queryInput === undefined ? \"\" : UrlParams.toString(UrlParams.fromInput(queryInput))\n- const url = query === \"\" ? path : `${path}?${query}`\n- return options?.baseUrl === undefined ? url : new URL(url, options.baseUrl.toString()).toString()\n+ const urlParams = queryInput === undefined ? UrlParams.empty : UrlParams.fromInput(queryInput)\n+ if (options?.baseUrl === undefined) {\n+ const query = UrlParams.toString(urlParams)\n+ return query === \"\" ? path : `${path}?${query}`\n+ }\n+ const url = new URL(\n+ HttpClientRequest.prependUrl(HttpClientRequest.get(path), options.baseUrl.toString()).url\n+ )\n+ for (const [key, value] of urlParams.params) {\n+ if (value !== undefined) {\n+ url.searchParams.append(key, value)\n+ }\n+ }\n+ return url.toString()\n }\n InternalRecord.assignProperty(\n group.topLevel ? builder : builder[group.identifier],", "additions": 14, "deletions": 3 } ] }, { "pr": 7699, "title": "fix(HttpApiClient): decode form-urlencoded responses through UrlParams", "url": "https://github.com/Effect-TS/effect/pull/7699", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:57:15Z", "mergedAt": "2026-09-03T03:50:40Z", "head": "e8f256be143b0787fe72b967d69d36ecbca8dc83", "files": [ { "filename": "packages/effect/src/unstable/httpapi/HttpApiClient.ts", "patch": "@@ -1023,7 +1023,13 @@ function fromArrayBuffer(schema: Schema.Constraint): Schema.Top {\n : UnknownFromArrayBuffer\n }\n case \"FormUrlEncoded\":\n- return StringFromArrayBuffer.pipe(Schema.decodeTo(Schema.RecordFromUrlParams))\n+ return StringFromArrayBuffer.pipe(Schema.decodeTo(\n+ Schema.RecordFromUrlParams,\n+ SchemaTransformation.transform({\n+ decode: (text) => UrlParams.fromInput(new URLSearchParams(text)),\n+ encode: UrlParams.toString\n+ })\n+ ))\n case \"Uint8Array\":\n return Uint8ArrayFromArrayBuffer\n case \"Text\":", "additions": 7, "deletions": 1 } ] }, { "pr": 7681, "title": "fix(HttpServerResponse): preserve Web response content lengths", "url": "https://github.com/Effect-TS/effect/pull/7681", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:56:34Z", "mergedAt": "2026-09-03T03:38:40Z", "head": "ed171ce0ab4d1460d1707e809e7991cde2e78844", "files": [ { "filename": "packages/effect/src/unstable/http/HttpServerResponse.ts", "patch": "@@ -1384,7 +1384,8 @@ export const fromWeb = (response: Response): HttpServerResponse => {\n evaluate: () => response.body!,\n onError: (e) => e\n }),\n- contentType ?? undefined\n+ contentType ?? undefined,\n+ bodyInternal.parseContentLength(response.headers.get(\"content-length\"))\n )\n )\n }", "additions": 2, "deletions": 1 } ] }, { "pr": 7874, "title": "fix(Logger): complete file log writes after partial progress", "url": "https://github.com/Effect-TS/effect/pull/7874", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T11:14:36Z", "mergedAt": "2026-09-03T23:10:26Z", "head": "f8696a02e9bcea096850265eb8783d33f095f5cf", "files": [ { "filename": "packages/effect/src/Logger.ts", "patch": "@@ -951,9 +951,8 @@ export const layer = <\n *\n * const writes: Array = []\n * const file = {\n- * write: (buffer: Uint8Array) => Effect.sync(() => {\n+ * writeAll: (buffer: Uint8Array) => Effect.sync(() => {\n * writes.push(new TextDecoder().decode(buffer).trim())\n- * return FileSystem.Size(buffer.length)\n * })\n * } as unknown as FileSystem.File\n * const fileSystem = FileSystem.makeNoop({ open: () => Effect.succeed(file) })\n@@ -977,9 +976,8 @@ export const layer = <\n *\n * const writes: Array = []\n * const file = {\n- * write: (buffer: Uint8Array) => Effect.sync(() => {\n+ * writeAll: (buffer: Uint8Array) => Effect.sync(() => {\n * writes.push(new TextDecoder().decode(buffer).trim())\n- * return FileSystem.Size(buffer.length)\n * })\n * } as unknown as FileSystem.File\n * const fileSystem = FileSystem.makeNoop({ open: () => Effect.succeed(file) })\n@@ -1030,7 +1028,7 @@ export const toFile = dual<\n const encoder = new TextEncoder()\n return yield* batched(self, {\n window: options?.batchWindow ?? 1000,\n- flush: (output) => effect.ignore(logFile.write(encoder.encode(output.join(\"\\n\") + \"\\n\")))\n+ flush: (output) => effect.ignore(logFile.writeAll(encoder.encode(output.join(\"\\n\") + \"\\n\")))\n })\n })\n )", "additions": 3, "deletions": 5 } ] }, { "pr": 7708, "title": "fix(NodeFileSystem): accept empty writeAll buffers", "url": "https://github.com/Effect-TS/effect/pull/7708", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:02:56Z", "mergedAt": "2026-09-03T04:07:04Z", "head": "3c79cf8c7bfddf3f3abd6d800a4b3d268462fa4b", "files": [ { "filename": "packages/platform/node-shared/src/NodeFileSystem.ts", "patch": "@@ -382,7 +382,7 @@ const makeFile = (() => {\n }\n \n writeAll(buffer: Uint8Array) {\n- return this.writeAllChunk(buffer)\n+ return buffer.length === 0 ? Effect.void : this.writeAllChunk(buffer)\n }\n }\n ", "additions": 1, "deletions": 1 } ] }, { "pr": 7728, "title": "fix(NodeChildProcessSpawner): expose the first pipeline stage stdin", "url": "https://github.com/Effect-TS/effect/pull/7728", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:36Z", "mergedAt": "2026-09-03T04:57:26Z", "head": "43e548d7b72e0e5edb83b5b3ab150dc958e1edd1", "files": [ { "filename": "packages/platform/node-shared/src/NodeChildProcessSpawner.ts", "patch": "@@ -639,7 +639,7 @@ const make = Effect.gen(function*() {\n exitCode: handle.exitCode,\n isRunning: handle.isRunning,\n kill,\n- stdin: handle.stdin,\n+ stdin: handles[0].stdin,\n stdout: handle.stdout,\n stderr: handle.stderr,\n all: handle.all,", "additions": 1, "deletions": 1 } ] }, { "pr": 7716, "title": "fix(platform-node): preserve incoming bytes when selecting text readers", "url": "https://github.com/Effect-TS/effect/pull/7716", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:11Z", "mergedAt": "2026-09-03T04:11:38Z", "head": "149e514770e123fe30d5f693c12a081a531d67f3", "files": [ { "filename": "packages/platform/node/src/NodeHttpClient.ts", "patch": "@@ -275,18 +275,7 @@ class UndiciResponse extends Inspectable.Class implements HttpClientResponse, Pi\n if (this.textBody) {\n return this.textBody\n }\n- this.textBody = Effect.tryPromise({\n- try: () => this.source.body.text(),\n- catch: (cause) =>\n- new Error.HttpClientError({\n- reason: new Error.DecodeError({\n- request: this.request,\n- response: this,\n- cause\n- })\n- })\n- }).pipe(Effect.cached, Effect.runSync)\n- this.arrayBufferBody = Effect.map(this.textBody, (_) => new TextEncoder().encode(_).buffer)\n+ this.textBody = Effect.map(this.arrayBuffer, (_) => new TextDecoder().decode(_))\n return this.textBody\n }\n ", "additions": 1, "deletions": 12 }, { "filename": "packages/platform/node/src/NodeHttpIncomingMessage.ts", "patch": "@@ -76,17 +76,7 @@ export abstract class NodeHttpIncomingMessage extends Inspectable.Class\n if (this.textEffect) {\n return this.textEffect\n }\n- this.textEffect = Effect.runSync(Effect.cached(\n- Effect.flatMap(\n- IncomingMessage.MaxBodySize,\n- (maxBodySize) =>\n- NodeStream.toString(() => this.source, {\n- onError: this.onError,\n- maxBytes: maxBodySize\n- })\n- )\n- ))\n- this.arrayBufferEffect = Effect.map(this.textEffect, (_) => new TextEncoder().encode(_).buffer)\n+ this.textEffect = Effect.map(this.arrayBuffer, (_) => Buffer.from(_).toString(\"utf8\"))\n return this.textEffect\n }\n ", "additions": 1, "deletions": 11 } ] }, { "pr": 7720, "title": "fix(sql-pglite): preserve string values passed to sql.json", "url": "https://github.com/Effect-TS/effect/pull/7720", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:20Z", "mergedAt": "2026-09-03T04:15:24Z", "head": "b4740605f612ccce7d75e6452abd52276b0e673e", "files": [ { "filename": "packages/sql/pglite/src/PgliteClient.ts", "patch": "@@ -429,13 +429,12 @@ export const makeCompiler = (\n onCustom(type, placeholder, withoutTransform) {\n switch (type.kind) {\n case \"PgJson\": {\n+ const value = withoutTransform || transformValue === undefined\n+ ? type.paramA\n+ : transformValue(type.paramA)\n return [\n placeholder(undefined),\n- [\n- withoutTransform || transformValue === undefined\n- ? type.paramA\n- : transformValue(type.paramA)\n- ]\n+ [typeof value === \"string\" ? JSON.stringify(value) : value]\n ]\n }\n }", "additions": 4, "deletions": 5 } ] }, { "pr": 7829, "title": "fix(sql-libsql): isolate transaction contexts per client", "url": "https://github.com/Effect-TS/effect/pull/7829", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T05:29:52Z", "mergedAt": "2026-09-04T03:35:48Z", "head": "0c8f8ed74413126b00bb31b8ae9b497788e744d1", "files": [ { "filename": "packages/sql/libsql/src/LibsqlClient.ts", "patch": "@@ -70,9 +70,7 @@ export interface LibsqlClient extends Client.SqlClient {\n */\n export const LibsqlClient = Context.Service(\"@effect/sql-libsql/LibsqlClient\")\n \n-const LibsqlTransaction = Context.Service(\n- \"@effect/sql-libsql/LibsqlClient/LibsqlTransaction\"\n-)\n+let clientIdCounter = 0\n \n /**\n * Configuration for a libSQL client, either by supplying connection options or an existing live libSQL client.\n@@ -185,6 +183,9 @@ export const make = (\n options: LibsqlClientConfig\n ): Effect.Effect =>\n Effect.gen(function*() {\n+ const LibsqlTransaction = Context.Service(\n+ `@effect/sql-libsql/LibsqlClient/LibsqlTransaction/${clientIdCounter++}`\n+ )\n const compiler = Statement.makeCompilerSqlite(options.transformQueryNames)\n const transformRows = options.transformResultNames ?\n Statement.defaultTransforms(", "additions": 4, "deletions": 3 } ] }, { "pr": 7722, "title": "fix(sql-sqlite-node): capture unprepared statement preparation errors", "url": "https://github.com/Effect-TS/effect/pull/7722", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:25Z", "mergedAt": "2026-09-03T04:33:42Z", "head": "df9dcfcc171453139536d9431002b73df3ebf9b0", "files": [ { "filename": "packages/sql/sqlite-node/src/SqliteClient.ts", "patch": "@@ -151,14 +151,16 @@ export const make = (\n db.exec(\"PRAGMA journal_mode = WAL\")\n }\n \n+ const prepare = (sql: string) =>\n+ Effect.try({\n+ try: () => db.prepare(sql),\n+ catch: (cause) => new SqlError({ reason: classifyError(cause, \"Failed to prepare statement\", \"prepare\") })\n+ })\n+\n const prepareCache = yield* Cache.make({\n capacity: options.prepareCacheSize ?? 200,\n timeToLive: options.prepareCacheTTL ?? Duration.minutes(10),\n- lookup: (sql: string) =>\n- Effect.try({\n- try: () => db.prepare(sql),\n- catch: (cause) => new SqlError({ reason: classifyError(cause, \"Failed to prepare statement\", \"prepare\") })\n- })\n+ lookup: prepare\n })\n \n const runStatement = (\n@@ -246,7 +248,7 @@ export const make = (\n const runValuesUnprepared = (\n sql: string,\n params: ReadonlyArray\n- ) => runStatementValuesUnprepared(db.prepare(sql), params)\n+ ) => Effect.flatMap(prepare(sql), (statement) => runStatementValuesUnprepared(statement, params))\n \n return identity({\n execute(sql, params, transformRows) {\n@@ -264,7 +266,7 @@ export const make = (\n return runValuesUnprepared(sql, params)\n },\n executeUnprepared(sql, params, transformRows) {\n- const effect = runStatement(db.prepare(sql), params ?? [], false)\n+ const effect = Effect.flatMap(prepare(sql), (statement) => runStatement(statement, params ?? [], false))\n return transformRows ? Effect.map(effect, transformRows) : effect\n },\n executeStream(_sql, _params) {", "additions": 9, "deletions": 7 } ] }, { "pr": 7661, "title": "fix(Schema): preserve percent-encoded JSON Schema references", "url": "https://github.com/Effect-TS/effect/pull/7661", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:50:10Z", "mergedAt": "2026-09-03T03:38:15Z", "head": "1b75e1f664a02e49b5b4c211b66d4c3a8d0d88c8", "files": [ { "filename": "packages/effect/src/internal/schema/toJsonSchemaDocument.ts", "patch": "@@ -16,6 +16,10 @@ type CheckRepresentationAnnotation = SchemaRepresentation.CheckRepresentationAnn\n SchemaRepresentation.Representation\n >\n \n+function formatReferenceToken(token: string): string {\n+ return encodeURI(escapeToken(token)).replace(/#/g, \"%23\")\n+}\n+\n const jsonSchemaAnnotationExcludedKeys = new Set([\n ...InternalAnnotations.annotationExcludedKeys,\n InternalAnnotations.IDENTIFIER_FALLBACK_KEY,\n@@ -220,10 +224,16 @@ function compileJsonSchema(\n \n function finalizeJsonSchema(schema: JsonSchema.JsonSchema): JsonSchema.JsonSchema {\n if (!hasAliases) return schema\n+ // URI-encoded slashes separate pointer tokens; only ~1 represents a slash within a token.\n return rewriteRefs(schema, ($ref) =>\n- $ref.replace(/^#\\/\\$defs\\/([^/]*)/, (match, token) => {\n+ $ref.replace(/^#\\/\\$defs\\/((?:(?!%2[fF])[^/])*)/, (match, token) => {\n+ try {\n+ token = decodeURIComponent(token)\n+ } catch {\n+ // Keep the raw token so malformed callback references can still be canonicalized.\n+ }\n const canonical = definitionStates.get(unescapeToken(token))\n- return typeof canonical === \"string\" ? `#/$defs/${escapeToken(canonical)}` : match\n+ return typeof canonical === \"string\" ? `#/$defs/${formatReferenceToken(canonical)}` : match\n }))\n }\n \n@@ -283,7 +293,7 @@ function compileJsonSchema(\n ): JsonSchema.JsonSchema {\n if (representation._tag === \"Reference\") {\n const canonical = compileDefinition(representation.$ref, path)\n- return { $ref: `#/$defs/${escapeToken(canonical)}` }\n+ return { $ref: `#/$defs/${formatReferenceToken(canonical)}` }\n }\n const cached = compiledRepresentations.get(representation)\n if (cached !== undefined) return cached", "additions": 13, "deletions": 3 } ] }, { "pr": 7673, "title": "fix(SchemaBinary): preserve leading U+FEFF in strings", "url": "https://github.com/Effect-TS/effect/pull/7673", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:50:38Z", "mergedAt": "2026-09-03T00:44:01Z", "head": "5e0480d2d60ff16f799b0b6e1fad76b8ddbaf06c", "files": [ { "filename": "packages/effect/src/unstable/encoding/SchemaBinary.ts", "patch": "@@ -921,7 +921,7 @@ const BIGINT_U32_MASK = BigInt(0xFFFFFFFF)\n const BIGINT_THIRTY_TWO = BigInt(32)\n \n const utf8Encode = new TextEncoder()\n-const utf8DecodeFatal = new TextDecoder(\"utf-8\", { fatal: true })\n+const utf8DecodeFatal = new TextDecoder(\"utf-8\", { fatal: true, ignoreBOM: true })\n \n // General numbers use up to seven varint bytes, a varint mantissa with a\n // decimal scale byte, or an eight-byte f64.", "additions": 1, "deletions": 1 } ] }, { "pr": 7884, "title": "fix(ConfigProvider): substitute dotenv references as literal data", "url": "https://github.com/Effect-TS/effect/pull/7884", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T12:21:08Z", "mergedAt": "2026-09-03T23:03:24Z", "head": "0ea877803fd5ece625fed51760155cff3f700b16", "files": [ { "filename": "packages/effect/src/ConfigProvider.ts", "patch": "@@ -1135,7 +1135,7 @@ function interpolate(envValue: string, parsed: Record): string {\n : defaultValue ?? \"\"\n \n return interpolate(\n- envValue.replace(group, value),\n+ envValue.replace(group, () => value),\n parsed\n )\n }", "additions": 1, "deletions": 1 } ] }, { "pr": 7953, "title": "fix(sql-sqlite-wasm): retain statement-specific result columns", "url": "https://github.com/Effect-TS/effect/pull/7953", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T19:51:39Z", "mergedAt": "2026-09-04T05:45:57Z", "head": "3266181e0c9724631a5ed4098ba384c9155165ba", "files": [ { "filename": "packages/sql/sqlite-wasm/src/OpfsWorker.ts", "patch": "@@ -94,13 +94,15 @@ export const run = (\n const [id, sql, params] = message\n messageId = id\n const results: Array = []\n- let columns: Array | undefined\n+ const columns: Array> = []\n for (const stmt of sqlite3.statements(db, sql)) {\n+ let statementColumns: Array | undefined\n sqlite3.bind_collection(stmt, params as any)\n while (sqlite3.step(stmt) === WaSqlite.SQLITE_ROW) {\n- columns = columns ?? sqlite3.column_names(stmt)\n+ statementColumns = statementColumns ?? sqlite3.column_names(stmt)\n const row = sqlite3.row(stmt)\n results.push(row)\n+ columns.push(statementColumns)\n }\n }\n options.port.postMessage([id, undefined, [columns, results]])", "additions": 4, "deletions": 2 }, { "filename": "packages/sql/sqlite-wasm/src/SqliteClient.ts", "patch": "@@ -387,7 +387,7 @@ export const make = (\n params: ReadonlyArray = [],\n rowMode: \"object\" | \"array\" = \"object\"\n ): Effect.Effect, SqlError, never> => {\n- const rows = Effect.withFiber<[Array, Array], SqlError>((fiber) => {\n+ const rows = Effect.withFiber((fiber) => {\n const id = currentId++\n return send(id, [id, sql, params], fiber.getRef(Transferables))\n })\n@@ -471,8 +471,10 @@ function rowToObject(columns: Array, row: Array) {\n }\n return obj\n }\n-const extractObject = (rows: [Array, Array]) => rows[1].map((row) => rowToObject(rows[0], row))\n-const extractRows = (rows: [Array, Array]) => rows[1]\n+type WorkerResult = [columns: Array>, rows: Array]\n+\n+const extractObject = (rows: WorkerResult) => rows[1].map((row, index) => rowToObject(rows[0][index], row))\n+const extractRows = (rows: WorkerResult) => rows[1]\n \n /**\n * Fiber reference that stores transferables to include with worker-backed SQLite WASM query messages.", "additions": 5, "deletions": 3 } ] }, { "pr": 7818, "title": "fix(IndexedDb): preserve out-of-line primary keys in query results", "url": "https://github.com/Effect-TS/effect/pull/7818", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T04:25:10Z", "mergedAt": "2026-09-03T06:31:16Z", "head": "f1d13d3e6709c41c3a87538ca79238e2aa4ea59d", "files": [ { "filename": "packages/platform/browser/src/IndexedDbQueryBuilder.ts", "patch": "@@ -937,7 +937,7 @@ const applySelect = Effect.fnUntraced(function*(\n if (predicate === undefined || predicate(cursor.value)) {\n results.push(\n keyPath === undefined\n- ? { ...cursor.value, key: cursor.key }\n+ ? { ...cursor.value, key: cursor.primaryKey }\n : cursor.value\n )\n count += 1\n@@ -992,7 +992,7 @@ const applyFirst = Effect.fnUntraced(function*(\n const data = yield* Effect.callback((resume) => {\n const { keyRange, store } = getReadonlyObjectStore(query.select)\n \n- if (keyRange !== undefined) {\n+ if (keyRange !== undefined && keyPath !== undefined) {\n const request = store.get(keyRange)\n \n request.onerror = (event) => {\n@@ -1016,7 +1016,7 @@ const applyFirst = Effect.fnUntraced(function*(\n }\n }\n } else {\n- const request = store.openCursor()\n+ const request = store.openCursor(keyRange)\n \n request.onerror = (event) => {\n resume(\n@@ -1031,7 +1031,7 @@ const applyFirst = Effect.fnUntraced(function*(\n \n request.onsuccess = () => {\n const value = request.result?.value\n- const key = request.result?.key\n+ const key = request.result?.primaryKey\n \n if (value === undefined) {\n resume(", "additions": 4, "deletions": 4 } ] }, { "pr": 7827, "title": "fix(Socket): count UTF-8 text bytes toward WebSocket watermarks", "url": "https://github.com/Effect-TS/effect/pull/7827", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T05:20:38Z", "mergedAt": "2026-09-03T06:06:11Z", "head": "e11c3efb97fc6da0a00dedbf69f72c5f33d453bb", "files": [ { "filename": "packages/effect/src/unstable/socket/Socket.ts", "patch": "@@ -919,7 +919,9 @@ export const fromWebSocket = (\n \n function push(data: Uint8Array | string) {\n buffer.push(data)\n- bufferSize += typeof data === \"string\" ? data.length : data.byteLength\n+ if (highWaterMark !== undefined) {\n+ bufferSize += typeof data === \"string\" ? encoder.encode(data).byteLength : data.byteLength\n+ }\n if (waiter !== undefined) {\n if (!flushScheduled) {\n flushScheduled = true", "additions": 3, "deletions": 1 } ] }, { "pr": 7864, "title": "fix(Random, Crypto): prevent rounding to exclusive upper bounds", "url": "https://github.com/Effect-TS/effect/pull/7864", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T11:01:01Z", "mergedAt": "2026-09-03T23:05:25Z", "head": "ca2677903ce528b2c5cda4a7bbb76335e664a0dd", "files": [ { "filename": "packages/effect/src/Crypto.ts", "patch": "@@ -11,6 +11,7 @@\n */\n import * as Context from \"./Context.ts\"\n import * as Effect from \"./Effect.ts\"\n+import * as random from \"./internal/random.ts\"\n import * as Uuid from \"./internal/uuid.ts\"\n import * as PlatformError from \"./PlatformError.ts\"\n \n@@ -251,7 +252,7 @@ export const make = (\n random: Effect.sync(() => nextDoubleUnsafe()),\n randomBoolean: Effect.sync(() => nextDoubleUnsafe() > 0.5),\n randomInt: Effect.sync(() => nextIntUnsafe()),\n- randomBetween: (min, max) => Effect.sync(() => nextDoubleUnsafe() * (max - min) + min),\n+ randomBetween: (min, max) => Effect.sync(() => random.nextBetween(min, max, nextDoubleUnsafe())),\n randomIntBetween(min, max, options) {\n const extra = options?.halfOpen === true ? 0 : 1\n return Effect.sync(() => {", "additions": 2, "deletions": 1 }, { "filename": "packages/effect/src/Random.ts", "patch": "@@ -153,7 +153,7 @@ export const nextInt: Effect.Effect = randomWith((r) => r.nextIntUnsafe(\n * @since 4.0.0\n */\n export const nextBetween = (min: number, max: number): Effect.Effect =>\n- randomWith((r) => r.nextDoubleUnsafe() * (max - min) + min)\n+ randomWith((r) => random.nextBetween(min, max, r.nextDoubleUnsafe()))\n \n /**\n * Generates a random integer between `min` and `max`.", "additions": 1, "deletions": 1 }, { "filename": "packages/effect/src/internal/random.ts", "patch": "@@ -13,3 +13,21 @@ export const Random: Context.Reference = Context.Reference {\n+ const value = draw * (max - min) + min\n+ if (value !== max || min >= max || !Number.isFinite(max)) {\n+ return value\n+ }\n+ // Rounding can reach the excluded endpoint even for a draw below 1.\n+ // Return its immediate predecessor, which is at least min for finite min < max.\n+ if (max === 0) {\n+ return -Number.MIN_VALUE\n+ }\n+ const view = new DataView(new ArrayBuffer(8))\n+ view.setFloat64(0, max)\n+ const bits = view.getBigUint64(0)\n+ view.setBigUint64(0, max > 0 ? bits - BigInt(1) : bits + BigInt(1))\n+ return view.getFloat64(0)\n+}", "additions": 18, "deletions": 0 } ] }, { "pr": 7973, "title": "fix(oxc): preserve bigint precision in literal fixes", "url": "https://github.com/Effect-TS/effect/pull/7973", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T23:49:36Z", "mergedAt": "2026-09-04T04:10:29Z", "head": "eb17dbd78bf772e5ab5a71a1a59cae20b623d132", "files": [ { "filename": "packages/tools/oxc/src/oxlint/rules/no-bigint-literals.ts", "patch": "@@ -10,7 +10,7 @@ const rule: CreateRule = {\n return {\n Literal(node) {\n if (typeof node.value === \"bigint\") {\n- const fixedSource = `BigInt(${node.value})`\n+ const fixedSource = `BigInt(\"${node.value}\")`\n context.report({\n node,\n message: \"BigInt literals are not allowed\",", "additions": 1, "deletions": 1 } ] }, { "pr": 8057, "title": "fix(cli): reset date input buffer on Tab navigation", "url": "https://github.com/Effect-TS/effect/pull/8057", "state": "OPEN", "isDraft": true, "createdAt": "2026-09-04T16:57:08Z", "mergedAt": null, "head": "e4522880d6501e5d3c1fd84a368e65a07197234f", "files": [ { "filename": "packages/effect/src/unstable/cli/Prompt.ts", "patch": "@@ -1777,7 +1777,7 @@ const processDateNext = (state: DateState) => {\n onSome: (next) => state.dateParts.indexOf(next)\n })\n return Action.NextFrame({\n- state: { ...state, cursor }\n+ state: { ...state, typed: \"\", cursor }\n })\n }\n ", "additions": 1, "deletions": 1 } ] }, { "pr": 8059, "title": "fix(cli): preserve option-looking flag values in wizard mode", "url": "https://github.com/Effect-TS/effect/pull/8059", "state": "OPEN", "isDraft": true, "createdAt": "2026-09-04T16:57:17Z", "mergedAt": null, "head": "868e5268f1beab61784884c813e89f8eac7f27e8", "files": [ { "filename": "packages/effect/src/unstable/cli/internal/wizard.ts", "patch": "@@ -168,7 +168,11 @@ const promptParam = Effect.fnUntraced(\n if (single.kind === Param.argumentKind) {\n return values\n }\n- return values.flatMap((value) => [commandLineArg(`--${single.name}`), value])\n+ return values.flatMap((value) =>\n+ value.value.startsWith(\"-\") && value.value.length > 1\n+ ? [commandLineArg(`--${single.name}=${value.value}`, `--${single.name}=${value.displayValue}`)]\n+ : [commandLineArg(`--${single.name}`), value]\n+ )\n }\n )\n ", "additions": 5, "deletions": 1 } ] }, { "pr": 7671, "title": "fix(Sse): preserve events with mixed line endings", "url": "https://github.com/Effect-TS/effect/pull/7671", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:50:34Z", "mergedAt": "2026-09-03T00:42:43Z", "head": "904f4654d1268600d97b3525576c1bde7cb75628", "files": [ { "filename": "packages/effect/src/unstable/encoding/Sse.ts", "patch": "@@ -311,7 +311,7 @@ export function makeParser(onParse: (event: AnyEvent) => void, options?: DecodeO\n let fieldLength = startingFieldLength\n let character: string\n \n- for (let index = startingPosition; lineLength < 0 && index < length; ++index) {\n+ for (let index = position + startingPosition; lineLength < 0 && index < length; ++index) {\n character = buffer[index]\n if (character === \":\" && fieldLength < 0) {\n fieldLength = index - position", "additions": 1, "deletions": 1 } ] }, { "pr": 7667, "title": "fix(Toml): allow child tables in distinct array entries", "url": "https://github.com/Effect-TS/effect/pull/7667", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:50:24Z", "mergedAt": "2026-09-03T01:07:56Z", "head": "9139c7aa0744215b2823b7a1ae570d0c41b47c2f", "files": [ { "filename": "packages/effect/src/unstable/encoding/Toml.ts", "patch": "@@ -45,7 +45,7 @@ class TomlParser {\n private index = 0\n private line = 1\n private column = 1\n- private readonly explicitTables = new Set()\n+ private readonly explicitTables = new Set()\n \n constructor(input: string) {\n this.input = input\n@@ -85,14 +85,14 @@ class TomlParser {\n }\n this.finishStatement()\n \n- const pathKey = JSON.stringify(path)\n- if (!array && this.explicitTables.has(pathKey)) {\n+ const table = this.resolveTable(path, array)\n+ if (!array && this.explicitTables.has(table)) {\n this.fail(`Cannot redefine table '${path.join(\".\")}'`)\n }\n if (!array) {\n- this.explicitTables.add(pathKey)\n+ this.explicitTables.add(table)\n }\n- this.current = this.resolveTable(path, array)\n+ this.current = table\n }\n \n private resolveTable(path: ReadonlyArray, array: boolean): Table {", "additions": 5, "deletions": 5 } ] }, { "pr": 7669, "title": "fix(Yaml): preserve folded scalar paragraph and indentation breaks", "url": "https://github.com/Effect-TS/effect/pull/7669", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:50:29Z", "mergedAt": "2026-09-03T01:10:48Z", "head": "273695734da6f96142cc2404bcb8185dc74132f5", "files": [ { "filename": "packages/effect/src/unstable/encoding/Yaml.ts", "patch": "@@ -480,14 +480,25 @@ class YamlParser {\n if (style === \"|\") {\n output = content.join(\"\\n\")\n } else {\n- for (let index = 0; index < content.length; index++) {\n- output += content[index]\n- if (index < content.length - 1) {\n- output += content[index].length === 0 || content[index + 1].length === 0 ? \"\\n\" : \" \"\n+ let blankLines = 0\n+ let previousMoreIndented: boolean | undefined\n+ for (const line of content) {\n+ if (line.length === 0) {\n+ blankLines++\n+ } else {\n+ const moreIndented = line.startsWith(\" \")\n+ const hardBreak = moreIndented || previousMoreIndented === true\n+ if (previousMoreIndented === undefined) output += \"\\n\".repeat(blankLines)\n+ else if (blankLines === 0) output += hardBreak ? \"\\n\" : \" \"\n+ else output += \"\\n\".repeat(blankLines + (hardBreak ? 1 : 0))\n+ output += line\n+ blankLines = 0\n+ previousMoreIndented = moreIndented\n }\n }\n+ output += \"\\n\".repeat(blankLines)\n }\n- if (chomp === \"keep\") return `${output}\\n`\n+ if (chomp === \"keep\") return output.endsWith(\"\\n\") ? output : `${output}\\n`\n output = output.replace(/\\n+$/, \"\")\n return chomp === \"strip\" ? output : `${output}\\n`\n }", "additions": 16, "deletions": 5 } ] }, { "pr": 7687, "title": "fix(cli): allow optional wrappers around alternative flags", "url": "https://github.com/Effect-TS/effect/pull/7687", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:56:48Z", "mergedAt": "2026-09-03T04:10:24Z", "head": "8676193ba0b02313421003b434c08fb0bfdb9270", "files": [ { "filename": "packages/effect/src/unstable/cli/Param.ts", "patch": "@@ -1272,18 +1272,15 @@ export const mapTryCatch: {\n export const optional = (\n param: Param\n ): Param> => {\n- const parse: Parse> = Effect.fnUntraced(function*(args) {\n- getUnderlyingSingleOrThrow(param)\n-\n- return yield* param.parse(args).pipe(\n+ const parse: Parse> = (args) =>\n+ param.parse(args).pipe(\n Effect.map(([leftover, value]) => [leftover, Option.some(value)] as const),\n // Catch both MissingOption (for flags) and MissingArgument (for positional arguments)\n Effect.catchTags({\n MissingOption: () => Effect.succeed([args.arguments, Option.none()] as const),\n MissingArgument: () => Effect.succeed([args.arguments, Option.none()] as const)\n })\n )\n- })\n return Object.assign(Object.create(Proto), {\n _tag: \"Optional\",\n kind: param.kind,", "additions": 2, "deletions": 5 } ] }, { "pr": 7691, "title": "fix(HttpStaticServer): ignore Range on non-GET requests", "url": "https://github.com/Effect-TS/effect/pull/7691", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:56:57Z", "mergedAt": "2026-09-03T03:42:28Z", "head": "050fda2fc8dbd6b5656a1f569d7b5183ec5dfba5", "files": [ { "filename": "packages/effect/src/unstable/http/HttpStaticServer.ts", "patch": "@@ -114,7 +114,7 @@ export const make: (options: {\n fileSize?: number\n ) => Effect.Effect = Effect.fnUntraced(\n function*(request, filePath, fileSize) {\n- const rangeHeader = request.headers[\"range\"]\n+ const rangeHeader = request.method === \"GET\" ? request.headers[\"range\"] : undefined\n const shouldEvaluateConditionals = request.headers[\"if-none-match\"] !== undefined ||\n request.headers[\"if-modified-since\"] !== undefined\n ", "additions": 1, "deletions": 1 } ] }, { "pr": 7712, "title": "fix(NodeSink): capture writable finalization errors", "url": "https://github.com/Effect-TS/effect/pull/7712", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:04Z", "mergedAt": "2026-09-03T04:03:41Z", "head": "1ada20c34fdee4caf01ef5af20eee0d7d5d42b87", "files": [ { "filename": "packages/platform/node-shared/src/NodeSink.ts", "patch": "@@ -95,22 +95,26 @@ export const pullIntoWritable = (options: {\n })\n }),\n Effect.forever({ disableYield: true }),\n- Effect.raceFirst(Effect.callback((resume) => {\n- const onError = (error: unknown) => resume(Effect.fail(options.onError(error)))\n- options.writable.once(\"error\", onError)\n- return Effect.sync(() => {\n- options.writable.off(\"error\", onError)\n- })\n- })),\n options.endOnDone !== false ?\n Pull.catchDone((_) => {\n if (\"closed\" in options.writable && options.writable.closed) {\n return Cause.done(_)\n }\n return Effect.callback>((resume) => {\n- options.writable.once(\"finish\", () => resume(Cause.done(_)))\n+ const onFinish = () => resume(Cause.done(_))\n+ options.writable.once(\"finish\", onFinish)\n options.writable.end()\n+ return Effect.sync(() => {\n+ options.writable.off(\"finish\", onFinish)\n+ })\n })\n }) :\n- identity\n+ identity,\n+ Effect.raceFirst(Effect.callback((resume) => {\n+ const onError = (error: unknown) => resume(Effect.fail(options.onError(error)))\n+ options.writable.once(\"error\", onError)\n+ return Effect.sync(() => {\n+ options.writable.off(\"error\", onError)\n+ })\n+ }))\n )", "additions": 13, "deletions": 9 } ] }, { "pr": 7718, "title": "fix(NodeHttpClient): parse Undici response forms from cached bytes", "url": "https://github.com/Effect-TS/effect/pull/7718", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:15Z", "mergedAt": "2026-09-03T05:03:52Z", "head": "64b1a10744bc02617f843e8f93cccd4f5517fe80", "files": [ { "filename": "packages/platform/node/src/NodeHttpClient.ts", "patch": "@@ -296,17 +296,18 @@ class UndiciResponse extends Inspectable.Class implements HttpClientResponse, Pi\n \n private formDataBody?: Effect.Effect\n get formData(): Effect.Effect {\n- return this.formDataBody ??= Effect.tryPromise({\n- try: () => this.source.body.formData() as Promise,\n- catch: (cause) =>\n- new Error.HttpClientError({\n- reason: new Error.DecodeError({\n- request: this.request,\n- response: this,\n- cause\n+ return this.formDataBody ??= Effect.flatMap(this.arrayBuffer, (body) =>\n+ Effect.tryPromise({\n+ try: () => new globalThis.Response(body, { headers: this.headers }).formData(),\n+ catch: (cause) =>\n+ new Error.HttpClientError({\n+ reason: new Error.DecodeError({\n+ request: this.request,\n+ response: this,\n+ cause\n+ })\n })\n- })\n- }).pipe(Effect.cached, Effect.runSync)\n+ })).pipe(Effect.cached, Effect.runSync)\n }\n \n private arrayBufferBody?: Effect.Effect", "additions": 11, "deletions": 10 } ] }, { "pr": 7724, "title": "fix(sql-mssql): forward the configured NTLM domain", "url": "https://github.com/Effect-TS/effect/pull/7724", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:29Z", "mergedAt": "2026-09-03T04:43:57Z", "head": "b412da06393fc68a53ad1f1a4b6ed774301856bf", "files": [ { "filename": "packages/sql/mssql/src/MssqlClient.ts", "patch": "@@ -311,6 +311,7 @@ export const make = (\n authentication: {\n type: (options.authType as any) ?? \"default\",\n options: {\n+ domain: options.domain,\n userName: options.username,\n password: options.password\n ? Redacted.value(options.password)", "additions": 1, "deletions": 0 } ] }, { "pr": 7726, "title": "fix(sql-mssql): adapt byte arrays for automatic VarBinary binding", "url": "https://github.com/Effect-TS/effect/pull/7726", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:32Z", "mergedAt": "2026-09-03T04:56:13Z", "head": "9bd58e62ae8a9816a0e6e348171111e148f402da", "files": [ { "filename": "packages/sql/mssql/src/MssqlClient.ts", "patch": "@@ -40,6 +40,7 @@ import {\n UnknownError\n } from \"effect/unstable/sql/SqlError\"\n import * as Statement from \"effect/unstable/sql/Statement\"\n+import { Buffer } from \"node:buffer\"\n import * as Tedious from \"tedious\"\n import type { ConnectionOptions } from \"tedious/lib/connection.ts\"\n import type { DataType } from \"tedious/lib/data-type.ts\"\n@@ -706,6 +707,17 @@ function numberToParamName(n: number) {\n return `${Math.ceil(n + 1)}`\n }\n \n+const byteArrayParameterType: DataType = {\n+ ...Tedious.TYPES.VarBinary,\n+ validate(value, collation, options) {\n+ return Tedious.TYPES.VarBinary.validate(\n+ Buffer.isBuffer(value) ? value : Buffer.from(value.buffer, value.byteOffset, value.byteLength),\n+ collation,\n+ options\n+ )\n+ }\n+}\n+\n /**\n * Default mapping from Effect SQL primitive value kinds to Tedious SQL Server parameter data types.\n *\n@@ -718,8 +730,8 @@ export const defaultParameterTypes: Record =\n bigint: Tedious.TYPES.BigInt,\n boolean: Tedious.TYPES.Bit,\n Date: Tedious.TYPES.DateTime,\n- Uint8Array: Tedious.TYPES.VarBinary,\n- Int8Array: Tedious.TYPES.VarBinary,\n+ Uint8Array: byteArrayParameterType,\n+ Int8Array: byteArrayParameterType,\n null: Tedious.TYPES.Bit\n }\n ", "additions": 14, "deletions": 2 } ] }, { "pr": 7730, "title": "fix(NodeHttpServer): forward custom and empty status text", "url": "https://github.com/Effect-TS/effect/pull/7730", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:40Z", "mergedAt": "2026-09-03T04:53:04Z", "head": "f39223491614723cd40e307d23b6a9c3adc6c89f", "files": [ { "filename": "packages/platform/node/src/NodeHttpServer.ts", "patch": "@@ -537,7 +537,7 @@ const handleResponse = (\n }\n \n if (request.method === \"HEAD\") {\n- nodeResponse.writeHead(response.status, headers)\n+ nodeResponse.writeHead(response.status, response.statusText, headers)\n return Effect.andThen(\n cancelResponseBody(response.body),\n Effect.callback((resume) => {\n@@ -556,12 +556,12 @@ const handleResponse = (\n const body = response.body\n switch (body._tag) {\n case \"Empty\": {\n- nodeResponse.writeHead(response.status, headers)\n+ nodeResponse.writeHead(response.status, response.statusText, headers)\n nodeResponse.end()\n return Effect.void\n }\n case \"Raw\": {\n- nodeResponse.writeHead(response.status, headers)\n+ nodeResponse.writeHead(response.status, response.statusText, headers)\n if (\n typeof body.body === \"object\" && body.body !== null && \"pipe\" in body.body &&\n typeof body.body.pipe === \"function\"\n@@ -587,7 +587,7 @@ const handleResponse = (\n })\n }\n case \"Uint8Array\": {\n- nodeResponse.writeHead(response.status, headers)\n+ nodeResponse.writeHead(response.status, response.statusText, headers)\n // If the body is less than 1MB, we skip the callback\n if (body.body.length < 1024 * 1024) {\n nodeResponse.end(body.body)\n@@ -600,7 +600,7 @@ const handleResponse = (\n case \"FormData\": {\n return Effect.suspend(() => {\n const r = new globalThis.Response(body.formData)\n- nodeResponse.writeHead(response.status, {\n+ nodeResponse.writeHead(response.status, response.statusText, {\n ...headers,\n ...Object.fromEntries(r.headers)\n })\n@@ -629,7 +629,7 @@ const handleResponse = (\n })\n }\n case \"Stream\": {\n- nodeResponse.writeHead(response.status, headers)\n+ nodeResponse.writeHead(response.status, response.statusText, headers)\n const drainLatch = Latch.makeUnsafe()\n nodeResponse.on(\"drain\", () => drainLatch.openUnsafe())\n return body.stream.pipe(\n@@ -666,7 +666,7 @@ const handleCause = (\n Effect.flatMap(causeResponse(originalCause), ([response, cause]) => {\n const headersSent = nodeResponse.headersSent\n if (!headersSent) {\n- nodeResponse.writeHead(response.status)\n+ nodeResponse.writeHead(response.status, response.statusText)\n }\n if (!nodeResponse.writableEnded) {\n nodeResponse.end()", "additions": 7, "deletions": 7 } ] }, { "pr": 7734, "title": "fix(sql-pg): honor explicit SSL overrides for URL modes", "url": "https://github.com/Effect-TS/effect/pull/7734", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:47Z", "mergedAt": "2026-09-03T04:52:11Z", "head": "265822b7a3922213fadba29fb2e17e0b361e7ea9", "files": [ { "filename": "packages/sql/pg/src/PgConnection.ts", "patch": "@@ -2136,7 +2136,7 @@ const configError = (message: string, cause?: unknown): SqlError =>\n const resolveConfig = (options: Config): Effect.Effect =>\n Effect.suspend(() => {\n const parsed: EffectResult.Result = options.url !== undefined\n- ? parseUrl(Redacted.value(options.url))\n+ ? parseUrl(Redacted.value(options.url), options.ssl !== undefined)\n : EffectResult.succeed({})\n if (EffectResult.isFailure(parsed)) return Effect.fail(parsed.failure)\n const url = parsed.success\n@@ -2187,7 +2187,7 @@ const parsePort = (value: string, what: string): EffectResult.Result => {\n+const parseUrl = (raw: string, hasExplicitSsl: boolean): EffectResult.Result => {\n let url: URL\n try {\n url = new URL(raw)\n@@ -2270,6 +2270,7 @@ const parseUrl = (raw: string): EffectResult.Result => {\n break\n case \"prefer\":\n case \"allow\":\n+ if (hasExplicitSsl) break\n return EffectResult.fail(\n configError(`sslmode \"${value}\" is not supported: set ssl explicitly to true or false`)\n )", "additions": 3, "deletions": 2 } ] }, { "pr": 7736, "title": "fix(BrowserHttpClient): support readers in ArrayBuffer mode", "url": "https://github.com/Effect-TS/effect/pull/7736", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:51Z", "mergedAt": "2026-09-03T04:53:37Z", "head": "032941f83c665f1af54d21193b297ab797a50dcd", "files": [ { "filename": "packages/platform/browser/src/BrowserHttpClient.ts", "patch": "@@ -260,6 +260,13 @@ abstract class IncomingMessageImpl extends Inspectable.Class implements HttpI\n if (this._textEffect) {\n return this._textEffect\n }\n+ if (this.source.responseType === \"arraybuffer\") {\n+ return this._textEffect = this.arrayBuffer.pipe(\n+ Effect.map((buffer) => new TextDecoder().decode(buffer)),\n+ Effect.cached,\n+ Effect.runSync\n+ )\n+ }\n return this._textEffect = Effect.callback((resume) => {\n if (this.source.readyState === 4) {\n resume(Effect.succeed(this.source.responseText))\n@@ -303,6 +310,9 @@ abstract class IncomingMessageImpl extends Inspectable.Class implements HttpI\n }\n \n get stream(): Stream.Stream {\n+ if (this.source.responseType === \"arraybuffer\") {\n+ return Stream.fromEffect(Effect.map(this.arrayBuffer, (buffer) => new Uint8Array(buffer)))\n+ }\n return Stream.callback((queue) => {\n let offset = 0\n const onReadyStateChange = () => {", "additions": 10, "deletions": 0 } ] }, { "pr": 7746, "title": "fix(atom-vue): publish the selected ref's current value", "url": "https://github.com/Effect-TS/effect/pull/7746", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:28Z", "mergedAt": "2026-09-03T01:16:23Z", "head": "e567ddf3ff4d6c96d5c5802bdea1e73c61f965b5", "files": [ { "filename": "packages/atom/vue/src/index.ts", "patch": "@@ -206,6 +206,7 @@ export const useAtomRef = (atomRef: () => AtomRef.ReadonlyRef): Readonly {\n value.value = next\n }))\n+ value.value = ref.value\n })\n return value as Readonly>\n }", "additions": 1, "deletions": 0 } ] }, { "pr": 7760, "title": "fix(opentelemetry): preserve negative counter deltas in both exporters", "url": "https://github.com/Effect-TS/effect/pull/7760", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:54Z", "mergedAt": "2026-09-03T04:47:05Z", "head": "7ed737f4e99a4d285fcb78f899c3f2570d14411a", "files": [ { "filename": "packages/effect/src/unstable/observability/OtlpMetrics.ts", "patch": "@@ -156,15 +156,15 @@ export const make: (options: {\n if (typeof currentCount === \"bigint\" && typeof previousCount === \"bigint\") {\n reportValue = currentCount - previousCount\n // Handle reset: if current < previous, report current value\n- if (reportValue < BigInt(0)) {\n+ if (state.state.incremental && reportValue < BigInt(0)) {\n reportValue = currentCount\n }\n } else {\n const curr = Number(currentCount)\n const prev = Number(previousCount)\n reportValue = curr - prev\n // Handle reset\n- if (reportValue < 0) {\n+ if (state.state.incremental && reportValue < 0) {\n reportValue = curr\n }\n }", "additions": 2, "deletions": 2 }, { "filename": "packages/opentelemetry/src/internal/metrics.ts", "patch": "@@ -116,15 +116,15 @@ export class MetricProducerImpl implements MetricProducer {\n if (typeof currentCount === \"bigint\" && typeof previousCount === \"bigint\") {\n reportValue = currentCount - previousCount\n // Handle reset: if current < previous, report current value\n- if (reportValue < BigInt(0)) {\n+ if (state.state.incremental && reportValue < BigInt(0)) {\n reportValue = currentCount\n }\n } else {\n const curr = Number(currentCount)\n const prev = Number(previousCount)\n reportValue = curr - prev\n // Handle reset\n- if (reportValue < 0) {\n+ if (state.state.incremental && reportValue < 0) {\n reportValue = curr\n }\n }", "additions": 2, "deletions": 2 } ] }, { "pr": 7778, "title": "fix(Optic): preserve deletions through pick and omit", "url": "https://github.com/Effect-TS/effect/pull/7778", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T00:00:30Z", "mergedAt": "2026-09-03T04:40:05Z", "head": "b2dda3f30bfe6c6781e60b87d72668e89062f54c", "files": [ { "filename": "packages/effect/src/Optic.ts", "patch": "@@ -1058,10 +1058,10 @@ class OptionalImpl implements Optional {\n )\n }\n pick(keys: any) {\n- return this.compose(makeLens(Struct.pick(keys), (p, a) => ({ ...a, ...p })))\n+ return this.compose(makeLens(Struct.pick(keys), (p, a) => ({ ...Struct.omit(a, keys), ...p })))\n }\n omit(keys: any) {\n- return this.compose(makeLens(Struct.omit(keys), (o, a) => ({ ...a, ...o })))\n+ return this.compose(makeLens(Struct.omit(keys), (o, a) => ({ ...Struct.pick(a, keys), ...o })))\n }\n notUndefined(): any {\n return this.refine(Predicate.isNotUndefined, { expected: \"a value other than `undefined`\" })", "additions": 2, "deletions": 2 } ] }, { "pr": 7780, "title": "fix(Optic): splice canonical string indices in optionalKey", "url": "https://github.com/Effect-TS/effect/pull/7780", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T00:00:34Z", "mergedAt": "2026-09-03T04:44:40Z", "head": "d081c807926d21f8d50951acc8526a9059b477cf", "files": [ { "filename": "packages/effect/src/Optic.ts", "patch": "@@ -1001,8 +1001,13 @@ class OptionalImpl implements Optional {\n (a, s) => {\n const copy = cloneShallow(s)\n if (a === undefined) {\n- if (Array.isArray(copy) && typeof key === \"number\") {\n- copy.splice(key, 1)\n+ const index = typeof key === \"symbol\" ? NaN : Number(key)\n+ if (\n+ Array.isArray(copy) &&\n+ (typeof key === \"number\" ||\n+ (String(index) === key && Number.isInteger(index) && index >= 0 && index < 0xFFFFFFFF))\n+ ) {\n+ copy.splice(index, 1)\n } else {\n delete copy[key]\n }", "additions": 7, "deletions": 2 } ] }, { "pr": 7796, "title": "fix(Schema): preserve ArrayEnsure element branches and encoding cardinality", "url": "https://github.com/Effect-TS/effect/pull/7796", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T01:46:28Z", "mergedAt": "2026-09-03T04:42:52Z", "head": "c180d8af382ed092e399faa0de7b452369d37ab5", "files": [ { "filename": "packages/effect/src/Schema.ts", "patch": "@@ -4521,13 +4521,16 @@ export interface ArrayEnsure extends decodeTo<$Array(schema: S): ArrayEnsure {\n- return Union([schema, ArraySchema(schema)]).pipe(decodeTo(\n- ArraySchema(toType(schema)),\n+ const many = ArraySchema(schema)\n+ const to = ArraySchema(toType(schema))\n+ const one = decodeTo(\n+ Tuple([Unknown]),\n SchemaTransformation.transform({\n- decode: Arr.ensure,\n- encode: (array) => array.length === 1 ? array[0] : array\n+ decode: (value) => [value] as const,\n+ encode: ([value]) => value\n })\n- ))\n+ )(schema)\n+ return make(Union([one, many]).pipe(decodeTo(to)).ast, { from: Union([schema, many]), to })\n }\n /**\n * Type-level representation returned by {@link UniqueArray}.", "additions": 8, "deletions": 5 } ] }, { "pr": 7798, "title": "fix(Channel): emit CR-terminated lines before pulling more input", "url": "https://github.com/Effect-TS/effect/pull/7798", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T01:46:32Z", "mergedAt": "2026-09-03T05:27:57Z", "head": "3d8c1dd0fa6f4364cd50c659e07eeee80f2efe61", "files": [ { "filename": "packages/effect/src/Channel.ts", "patch": "@@ -6515,9 +6515,8 @@ export const splitLines = (): Channel<\n // Accumulates text that has not yet been terminated by a line break.\n // Content is carried across chunks until a terminator is found.\n let stringBuilder = \"\"\n- // Set when a chunk ends with \\r so the next chunk can check whether\n- // the following character is \\n (completing a \\r\\n pair) or not\n- // (standalone \\r, which is itself a line terminator).\n+ // A trailing \\r completes the line immediately. Remember it only to\n+ // suppress a leading \\n in the next nonempty string.\n let midCRLF = false\n // Remembers the upstream Done value after the first time the upstream\n // signals completion, so subsequent pulls return Done immediately\n@@ -6544,11 +6543,8 @@ export const splitLines = (): Channel<\n let indexOfLF = str.indexOf(\"\\n\")\n if (midCRLF) {\n if (indexOfLF === 0) {\n- pushLine(\"\")\n from = 1\n indexOfLF = str.indexOf(\"\\n\", from)\n- } else {\n- pushLine(\"\")\n }\n midCRLF = false\n }\n@@ -6558,18 +6554,19 @@ export const splitLines = (): Channel<\n from = indexOfLF + 1\n indexOfLF = str.indexOf(\"\\n\", from)\n } else {\n+ pushLine(str.substring(from, indexOfCR))\n if (str.length === indexOfCR + 1) {\n midCRLF = true\n+ from = str.length\n indexOfCR = -1\n } else {\n- pushLine(str.substring(from, indexOfCR))\n from = indexOfCR + (indexOfLF === indexOfCR + 1 ? 2 : 1)\n indexOfCR = str.indexOf(\"\\r\", from)\n indexOfLF = str.indexOf(\"\\n\", from)\n }\n }\n }\n- stringBuilder = stringBuilder + str.substring(from, str.length - (midCRLF ? 1 : 0))\n+ stringBuilder = stringBuilder + str.substring(from)\n }\n }\n return Arr.isReadonlyArrayNonEmpty(chunkBuilder) ? chunkBuilder : null\n@@ -6584,7 +6581,7 @@ export const splitLines = (): Channel<\n onFailure: Effect.failCause,\n onDone: (leftover) => {\n done = Option.some(leftover)\n- if (stringBuilder.length > 0 || midCRLF) {\n+ if (stringBuilder.length > 0) {\n const last = stringBuilder\n stringBuilder = \"\"\n midCRLF = false", "additions": 6, "deletions": 9 } ] }, { "pr": 7820, "title": "fix(IndexedDb): keep select streams within their query limits", "url": "https://github.com/Effect-TS/effect/pull/7820", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T04:25:14Z", "mergedAt": "2026-09-03T06:29:37Z", "head": "5d75b87fd68bf572d8bc2aeb07ad1c2f4e59dab6", "files": [ { "filename": "packages/platform/browser/src/IndexedDbQueryBuilder.ts", "patch": "@@ -1785,6 +1785,7 @@ const SelectProto: Omit<\n const isPartial = data.length < chunkSize\n const next = makeSelect({\n ...select,\n+ limitValue: limit === undefined ? chunkSize : Math.min(chunkSize, limit - total),\n offsetValue: initialOffset + total\n })\n return [data, isPartial || reachedLimit ? Option.none() : Option.some(next)] as const", "additions": 1, "deletions": 0 } ] }, { "pr": 7886, "title": "fix(HashRing): include the final exclusion search radius", "url": "https://github.com/Effect-TS/effect/pull/7886", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T12:21:11Z", "mergedAt": "2026-09-03T23:01:47Z", "head": "f319b51332c383a8ffa8b630ae53ec672b21419e", "files": [ { "filename": "packages/effect/src/HashRing.ts", "patch": "@@ -420,7 +420,7 @@ function getIndexForInput(\n return [a, distA]\n }\n const range = Math.max(lo, len - lo)\n- for (let i = 1; i < range; i++) {\n+ for (let i = 1; i <= range; i++) {\n let index = lo - i\n if (index >= 0 && index < len && !exclude.has(ring[index][1])) {\n return [index, Math.abs(ring[index][0] - hash)]", "additions": 1, "deletions": 1 } ] }, { "pr": 7989, "title": "fix(ChildProcess): preserve astral escapes in templates", "url": "https://github.com/Effect-TS/effect/pull/7989", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-04T02:33:23Z", "mergedAt": "2026-09-04T04:00:15Z", "head": "e8ddc162ea03a2ca17d609fb819d6a73a49e3aa7", "files": [ { "filename": "packages/effect/src/unstable/process/ChildProcess.ts", "patch": "@@ -1018,8 +1018,13 @@ const splitByWhitespaces = (template: string, rawTemplate: string): {\n rawIndex += 1\n } else if (nextRawCharacter === \"u\" && rawTemplate[rawIndex + 2] === \"{\") {\n // Handle variable-length unicode escape sequences (i.e. `\\u{1F600}`) by:\n+ // - Advancing the template index an extra code unit for astral code points\n // - Advancing the raw template index past the unicode escape sequence\n- rawIndex = rawTemplate.indexOf(\"}\", rawIndex + 3)\n+ const end = rawTemplate.indexOf(\"}\", rawIndex + 3)\n+ if (parseInt(rawTemplate.slice(rawIndex + 3, end), 16) > 0xffff) {\n+ templateIndex += 1\n+ }\n+ rawIndex = end\n } else {\n // Advance raw template index past fixed-length escape sequences:\n // - \\n → 2 chars (backslash + n)", "additions": 6, "deletions": 1 } ] }, { "pr": 7675, "title": "fix(Mime): normalize parameters in all-extension lookups", "url": "https://github.com/Effect-TS/effect/pull/7675", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T18:50:43Z", "mergedAt": "2026-09-03T00:47:58Z", "head": "05a1d03a4c639acf1e3034f2d8737a8183afbd68", "files": [ { "filename": "packages/effect/src/unstable/http/Mime.ts", "patch": "@@ -72,5 +72,5 @@ export const getAllExtensions = (type: string): Option.Option(\n }\n \n if (count < minValue) {\n- return yield* new CliError.InvalidValue({\n- option: single.name,\n- value: `${count} values`,\n- expected: `at least ${minValue} value${minValue === 1 ? \"\" : \"s\"}`,\n- kind: single.kind\n- })\n+ return yield* count === 0\n+ ? new CliError.MissingArgument({ argument: single.name })\n+ : new CliError.InvalidValue({\n+ option: single.name,\n+ value: `${count} values`,\n+ expected: `at least ${minValue} value${minValue === 1 ? \"\" : \"s\"}`,\n+ kind: single.kind\n+ })\n }\n \n return [currentArgs, results] as const", "additions": 8, "deletions": 6 } ] }, { "pr": 7689, "title": "fix(HttpRouter): normalize prefix-removal metadata", "url": "https://github.com/Effect-TS/effect/pull/7689", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:56:52Z", "mergedAt": "2026-09-03T03:42:08Z", "head": "d0b0b0dac35e6d1238fbcdedf58b26ebedf9d424", "files": [ { "filename": "packages/effect/src/unstable/http/HttpRouter.ts", "patch": "@@ -163,6 +163,7 @@ export const make = Effect.gen(function*() {\n return HttpRouter.of({\n [TypeId]: TypeId,\n prefixed(this: HttpRouter, prefix: string) {\n+ prefix = removeTrailingSlash(prefix as PathInput)\n return HttpRouter.of({\n ...this,\n prefixed: (newPrefix: string) => this.prefixed(prefixPath(prefix, newPrefix)),\n@@ -748,7 +749,7 @@ export const prefixRoute: {\n ...self,\n path: prefixPath(self.path, prefix) as PathInput,\n prefix: Option.match(self.prefix, {\n- onNone: () => prefix as string,\n+ onNone: () => removeTrailingSlash(prefix as PathInput),\n onSome: (existingPrefix) => prefixPath(existingPrefix, prefix) as string\n })\n }))", "additions": 2, "deletions": 1 } ] }, { "pr": 7695, "title": "fix(HttpApiSchema): clear stale metadata in encodeToWithHeaders", "url": "https://github.com/Effect-TS/effect/pull/7695", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:57:06Z", "mergedAt": "2026-09-03T03:48:16Z", "head": "5e7ad10ae6f1e9acb6de511c0ce15964a03474bf", "files": [ { "filename": "packages/effect/src/unstable/httpapi/HttpApiSchema.ts", "patch": "@@ -735,8 +735,8 @@ export function encodeToWithHeaders<\n )\n ).annotate({\n \"~httpApiWithHeaders\": { body, headers, headersCodec: Schema.toEncoded(headers) },\n- ...(status !== undefined ? { httpApiStatus: status } : undefined),\n- ...(encoding !== undefined ? { \"~httpApiEncoding\": encoding } : undefined)\n+ httpApiStatus: status,\n+ \"~httpApiEncoding\": encoding\n })\n }\n }", "additions": 2, "deletions": 2 } ] }, { "pr": 7697, "title": "fix(HttpApiBuilder): honor status annotations on stream wrappers", "url": "https://github.com/Effect-TS/effect/pull/7697", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:57:11Z", "mergedAt": "2026-09-03T03:49:39Z", "head": "202fb6aa1a40352519a342c5c54da12d9e341676", "files": [ { "filename": "packages/effect/src/unstable/httpapi/HttpApiBuilder.ts", "patch": "@@ -971,13 +971,14 @@ function makeWithHeadersEncoder(endpoint: HttpApiEndpoint.Top): WithHeadersEncod\n }\n \n function makeStreamEncoder(endpoint: HttpApiEndpoint.Top): StreamEncoder | undefined {\n- const streamSchema = getStreamSuccessSchema(endpoint)\n- if (streamSchema === undefined) {\n+ const successSchema = getStreamSuccessSchema(endpoint)\n+ if (successSchema === undefined) {\n return undefined\n }\n \n+ const streamSchema = successSchema.body\n const hasBuffered = hasBufferedSuccess(endpoint)\n- const status = HttpApiSchema.getStatusStream(streamSchema)\n+ const status = HttpApiSchema.getStatusSuccessSchema(successSchema.schema)\n const contentType = streamSchema.contentType\n \n if (HttpApiSchema.isStreamUint8Array(streamSchema)) {\n@@ -1021,7 +1022,7 @@ function getStreamSuccessSchema(endpoint: HttpApiEndpoint.Top) {\n for (const schema of endpoint.success) {\n const body = HttpApiSchema.isWithHeaders(schema) ? schema.schema : schema\n if (HttpApiSchema.isStreamSchema(body)) {\n- return body\n+ return { schema, body }\n }\n }\n }", "additions": 5, "deletions": 4 }, { "filename": "packages/effect/src/unstable/httpapi/HttpApiSchema.ts", "patch": "@@ -996,11 +996,6 @@ export function getResponseEncodingSchema(schema: Schema.Constraint): ResponseEn\n return getResponseEncoding(schema.ast)\n }\n \n-/** @internal */\n-export function getStatusStream(self: StreamSchema): number {\n- return getStatusSuccess(self.ast)\n-}\n-\n /** @internal */\n export function getStatusError(self: SchemaAST.AST): number {\n return resolveHttpApiStatus(self) ?? 500", "additions": 0, "deletions": 5 } ] }, { "pr": 7705, "title": "fix(HttpApiTest): run registered pre-response handlers", "url": "https://github.com/Effect-TS/effect/pull/7705", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T19:57:26Z", "mergedAt": "2026-09-03T04:07:55Z", "head": "5c656734e23b5531ce266347fd034a19f346fc25", "files": [ { "filename": "packages/effect/src/unstable/httpapi/HttpApiTest.ts", "patch": "@@ -20,6 +20,7 @@ import type { HttpPlatform } from \"../http/HttpPlatform.ts\"\n import * as HttpRouter from \"../http/HttpRouter.ts\"\n import * as HttpServerRequest from \"../http/HttpServerRequest.ts\"\n import * as HttpServerResponse from \"../http/HttpServerResponse.ts\"\n+import * as preResponseHandler from \"../http/internal/preResponseHandler.ts\"\n import type * as HttpApi from \"./HttpApi.ts\"\n import type { HandlerRuntime } from \"./HttpApiBuilder.ts\"\n import * as HttpApiBuilder from \"./HttpApiBuilder.ts\"\n@@ -100,6 +101,10 @@ export const groups = Effect.fnUntraced(function*<\n const httpClient = HttpClient.make(Effect.fnUntraced(function*(request) {\n const serverRequest = HttpServerRequest.fromClientRequest(request)\n const response = yield* handler.pipe(\n+ Effect.flatMap((response) => {\n+ const preResponse = preResponseHandler.requestPreResponseHandlers.get(serverRequest.source)\n+ return preResponse === undefined ? Effect.succeed(response) : preResponse(serverRequest, response)\n+ }),\n Effect.provideService(HttpServerRequest.HttpServerRequest, serverRequest),\n Effect.orDie\n )", "additions": 5, "deletions": 0 } ] }, { "pr": 7732, "title": "fix(sql-sqlite-do): classify streaming storage failures as SqlError", "url": "https://github.com/Effect-TS/effect/pull/7732", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T21:03:43Z", "mergedAt": "2026-09-03T05:11:49Z", "head": "9cb9b887f9954f9c4524634f09feb255f3e169fa", "files": [ { "filename": "packages/sql/sqlite-do/src/SqliteClient.ts", "patch": "@@ -21,6 +21,7 @@\n * @since 4.0.0\n */\n import type { DurableObjectStorage, SqlStorage } from \"@cloudflare/workers-types\"\n+import * as Cause from \"effect/Cause\"\n import * as Config from \"effect/Config\"\n import * as Context from \"effect/Context\"\n import * as Effect from \"effect/Effect\"\n@@ -258,6 +259,12 @@ export const make = (\n const iterator = runIterator(sql, params)\n return Stream.fromIteratorSucceed(iterator, 128)\n }).pipe(\n+ Stream.catchCauseFilter(Cause.findDefect, (defect) =>\n+ Stream.fail(\n+ new SqlError({\n+ reason: classifyError(defect, \"Failed to execute statement\", \"execute\")\n+ })\n+ )),\n transformRows\n ? Stream.mapArray((chunk) => transformRows(chunk) as any)\n : identity", "additions": 7, "deletions": 0 } ] }, { "pr": 7742, "title": "fix(effect): tolerate repeated reactivity keys during query cleanup", "url": "https://github.com/Effect-TS/effect/pull/7742", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:21Z", "mergedAt": "2026-09-03T04:55:25Z", "head": "bba6d89a3463bd1000be7e418c7f45d03a7b76f5", "files": [ { "filename": "packages/effect/src/unstable/reactivity/Reactivity.ts", "patch": "@@ -123,7 +123,8 @@ export const make = Effect.sync(() => {\n })\n return () => {\n for (let i = 0; i < resolvedKeys.length; i++) {\n- const set = handlers.get(resolvedKeys[i])!\n+ const set = handlers.get(resolvedKeys[i])\n+ if (set === undefined) continue\n set.delete(handler)\n if (set.size === 0) {\n handlers.delete(resolvedKeys[i])", "additions": 2, "deletions": 1 } ] }, { "pr": 7748, "title": "fix(effect): encode tool results using their known result branch", "url": "https://github.com/Effect-TS/effect/pull/7748", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:32Z", "mergedAt": "2026-09-03T06:43:03Z", "head": "1a8fb7e2b73882684056f96c2cbfc6c63ff5eb5a", "files": [ { "filename": "packages/effect/src/unstable/ai/Toolkit.ts", "patch": "@@ -243,27 +243,25 @@ const Proto = {\n readonly context: Context.Context\n readonly handler: Tool.Handler[\"handler\"]\n readonly decodeParameters: (u: unknown) => Effect.Effect\n- readonly decodeResult: (u: unknown) => Effect.Effect\n- readonly encodeResult: (u: unknown) => Effect.Effect\n+ readonly encodeResult: (u: unknown, isFailure: boolean) => Effect.Effect\n }>()\n \n const getSchemas = (tool: Tool.Any) => {\n let schemas = schemasCache.get(tool)\n if (Predicate.isUndefined(schemas)) {\n const handler = services.mapUnsafe.get(tool.id)! as Tool.Handler\n- const resultSchema = tool.failureMode === \"return\"\n- ? Schema.Union([tool.successSchema, tool.failureSchema, AiError.AiError])\n- : tool.successSchema\n const decodeParameters = Schema.isSchema(tool.parametersSchema)\n ? Schema.decodeUnknownEffect(tool.parametersSchema) as any\n : (u: unknown) => Effect.succeed(u)\n- const decodeResult = Schema.decodeUnknownEffect(resultSchema) as any\n- const encodeResult = Schema.encodeUnknownEffect(resultSchema) as any\n+ const encodeSuccess = Schema.encodeUnknownEffect(tool.successSchema) as any\n+ const encodeFailure = Schema.encodeUnknownEffect(tool.failureSchema) as any\n+ const encodeAiError = Schema.encodeUnknownEffect(AiError.AiError)\n+ const encodeResult = (u: unknown, isFailure: boolean) =>\n+ !isFailure ? encodeSuccess(u) : AiError.isAiError(u) ? encodeAiError(u) : encodeFailure(u)\n schemas = {\n context: handler.context,\n handler: handler.handler,\n decodeParameters,\n- decodeResult,\n encodeResult\n }\n schemasCache.set(tool, schemas)\n@@ -294,8 +292,8 @@ const Proto = {\n // Fetch cached schemas / handlers for the tool\n const schemas = getSchemas(tool)\n \n- const encodeResult = (result: any) =>\n- schemas.encodeResult(result).pipe(\n+ const encodeResult = (result: any, isFailure: boolean) =>\n+ schemas.encodeResult(result, isFailure).pipe(\n Effect.mapError((cause) =>\n AiError.make({\n module: \"Toolkit\",\n@@ -323,7 +321,7 @@ const Proto = {\n return yield* error\n }\n return Stream.fromEffect(\n- Effect.map(encodeResult(error), (encodedResult) => ({\n+ Effect.map(encodeResult(error, true), (encodedResult) => ({\n result: error,\n isFailure: true,\n preliminary: false,\n@@ -390,7 +388,7 @@ const Proto = {\n : Stream.succeed({ result: normalizedError, isFailure: true, preliminary: false })\n }),\n Stream.mapEffect(Effect.fnUntraced(function*(output) {\n- const encodedResult = yield* encodeResult(output.result)\n+ const encodedResult = yield* encodeResult(output.result, output.isFailure)\n return { ...output, encodedResult }\n })),\n Stream.onEnd(Fiber.interrupt(fiber))", "additions": 10, "deletions": 12 } ] }, { "pr": 7754, "title": "fix(doctest): preserve statement boundaries after generated assertions", "url": "https://github.com/Effect-TS/effect/pull/7754", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:43Z", "mergedAt": "2026-09-03T01:14:29Z", "head": "7bf0ee5dadd9ffcb7190fd4ac3654d3ba4c8aca7", "files": [ { "filename": "packages/tools/doctest/src/Transform.ts", "patch": "@@ -175,7 +175,7 @@ export const transform = (source: string, file: string, line: number): string =>\n output.overwrite(\n expression.start,\n comment.end,\n- `${alias}(${source.slice(expression.start, expression.end)}, ${expected})`\n+ `${alias}(${source.slice(expression.start, expression.end)}, ${expected});`\n )\n continue\n }\n@@ -189,7 +189,7 @@ export const transform = (source: string, file: string, line: number): string =>\n id?.type === \"Identifier\" && typeof id.name === \"string\"\n ) {\n const indentation = source.slice(source.lastIndexOf(\"\\n\", node.start - 1) + 1, node.start)\n- output.overwrite(node.end, comment.end, `\\n${indentation}${alias}(${id.name}, ${expected})`)\n+ output.overwrite(node.end, comment.end, `\\n${indentation}${alias}(${id.name}, ${expected});`)\n continue\n }\n }", "additions": 2, "deletions": 2 } ] }, { "pr": 7762, "title": "fix(opentelemetry): use collection interval starts for delta metrics", "url": "https://github.com/Effect-TS/effect/pull/7762", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:14:57Z", "mergedAt": "2026-09-03T05:19:58Z", "head": "0e95d468e8ca916bb45ec5e81abde957ef718198", "files": [ { "filename": "packages/opentelemetry/src/internal/metrics.ts", "patch": "@@ -133,7 +133,7 @@ export class MetricProducerImpl implements MetricProducer {\n }\n \n const descriptor = descriptorFromState(state, attributes)\n- const startTime = this.startTimeFor(descriptor.name, intervalStartTime)\n+ const startTime = isDelta ? intervalStartTime : this.startTimeFor(descriptor.name, intervalStartTime)\n const dataPoint: DataPoint = {\n startTime,\n endTime: hrTimeNow,\n@@ -217,7 +217,7 @@ export class MetricProducerImpl implements MetricProducer {\n }\n \n const descriptor = descriptorFromState(state, attributes)\n- const startTime = this.startTimeFor(descriptor.name, intervalStartTime)\n+ const startTime = isDelta ? intervalStartTime : this.startTimeFor(descriptor.name, intervalStartTime)\n const dataPoint: DataPoint = {\n startTime,\n endTime: hrTimeNow,\n@@ -263,7 +263,7 @@ export class MetricProducerImpl implements MetricProducer {\n }\n \n const descriptor = descriptorFromState(state, attributes)\n- const startTime = this.startTimeFor(descriptor.name, intervalStartTime)\n+ const startTime = isDelta ? intervalStartTime : this.startTimeFor(descriptor.name, intervalStartTime)\n dataPoints.push({\n startTime,\n endTime: hrTimeNow,", "additions": 3, "deletions": 3 } ] }, { "pr": 7764, "title": "fix(ai-openrouter): retain normalized tool-call finish reasons", "url": "https://github.com/Effect-TS/effect/pull/7764", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-02T22:15:01Z", "mergedAt": "2026-09-03T01:13:38Z", "head": "e1f89fa2ca9c8f4e610b0669c37b5ab1b0f15ad3", "files": [ { "filename": "packages/ai/openrouter/src/OpenRouterLanguageModel.ts", "patch": "@@ -1494,7 +1494,7 @@ const makeStreamResponse = Effect.fnUntraced(\n (detail) => detail.type === \"reasoning.encrypted\" && detail.data.length > 0\n )\n if (totalToolCalls > 0 && hasEncryptedReasoning && finishReason === \"stop\") {\n- finishReason = resolveFinishReason(\"tool-calls\")\n+ finishReason = \"tool-calls\"\n }\n \n // Forward any unsent tool calls if finish reason is 'tool-calls'", "additions": 1, "deletions": 1 } ] }, { "pr": 7788, "title": "fix(FileSystem): retain the sink write default for undefined flags", "url": "https://github.com/Effect-TS/effect/pull/7788", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T00:22:59Z", "mergedAt": "2026-09-03T04:44:56Z", "head": "fc93a19c166486d27c3e246786b71646651b2f27", "files": [ { "filename": "packages/effect/src/FileSystem.ts", "patch": "@@ -741,7 +741,7 @@ export const make = (\n }, Stream.unwrap),\n sink: (path, options) =>\n pipe(\n- impl.open(path, { flag: \"w\", ...options }),\n+ impl.open(path, { ...options, flag: options?.flag ?? \"w\" }),\n Effect.map((file) => Sink.forEach((_: Uint8Array) => file.writeAll(_))),\n Sink.unwrap\n ),", "additions": 1, "deletions": 1 } ] }, { "pr": 7800, "title": "fix(platform-bun): report Unix addresses for Unix socket servers", "url": "https://github.com/Effect-TS/effect/pull/7800", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T01:46:37Z", "mergedAt": "2026-09-03T04:36:07Z", "head": "ca25095134bf51cf632e4165a7daa36dd700d8bb", "files": [ { "filename": "packages/platform/bun/src/BunHttpServer.ts", "patch": "@@ -155,7 +155,9 @@ export const make = Effect.fnUntraced(\n yield* Scope.addFinalizer(scope, shutdown)\n \n return Server.make({\n- address: { _tag: \"TcpAddress\", port: server.port!, hostname: server.hostname! },\n+ address: \"unix\" in options && options.unix !== undefined\n+ ? { _tag: \"UnixAddress\", path: options.unix }\n+ : { _tag: \"TcpAddress\", port: server.port!, hostname: server.hostname! },\n serve: Effect.fnUntraced(function*(httpApp, middleware) {\n const parent = yield* Effect.fiber\n const services = parent.context", "additions": 3, "deletions": 1 } ] }, { "pr": 7810, "title": "fix(platform-node): preserve unsafe worker reply payloads", "url": "https://github.com/Effect-TS/effect/pull/7810", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T04:06:12Z", "mergedAt": "2026-09-03T06:40:23Z", "head": "582db10525abf8352aa4a1976143dab45b6d3680", "files": [ { "filename": "packages/platform/node/src/NodeWorkerRunner.ts", "patch": "@@ -38,11 +38,13 @@ export const layer: Layer.Layer = Layer.succe\n })\n }\n \n- const sendUnsafe = WorkerThreads.parentPort\n+ const sendRaw = WorkerThreads.parentPort\n ? (_portId: number, message: any, transfers?: any) => WorkerThreads.parentPort!.postMessage(message, transfers)\n : (_portId: number, message: any, _transfers?: any) => process.send!(message)\n+ const sendUnsafe = (_portId: number, message: O, transfers?: ReadonlyArray) =>\n+ sendRaw(_portId, [1, message], transfers)\n const send = (_portId: number, message: O, transfers?: ReadonlyArray) =>\n- Effect.sync(() => sendUnsafe(_portId, [1, message], transfers as any))\n+ Effect.sync(() => sendUnsafe(_portId, message, transfers))\n \n const run = (\n handler: (portId: number, message: I) => Effect.Effect | void\n@@ -115,7 +117,7 @@ export const layer: Layer.Layer = Layer.succe\n })\n )\n \n- sendUnsafe(0, [0])\n+ sendRaw(0, [0])\n \n return yield* Deferred.await(closeLatch)\n }))", "additions": 5, "deletions": 3 } ] }, { "pr": 7814, "title": "fix(McpServer): resolve HTTP resource templates without losing origins", "url": "https://github.com/Effect-TS/effect/pull/7814", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T04:18:08Z", "mergedAt": "2026-09-03T06:35:31Z", "head": "e97015ff87a0c671eae2d21b910c0a8195044ad6", "files": [ { "filename": "packages/effect/src/unstable/ai/McpServer.ts", "patch": "@@ -2149,9 +2149,9 @@ const makeUriMatcher = () => {\n caseSensitive: true\n })\n const add = (uri: string, value: A) => {\n- router.on(\"GET\", uri as any, value)\n+ router.on(\"GET\", `/${uri}`, value)\n }\n- const find = (uri: string) => router.find(\"GET\", uri)\n+ const find = (uri: string) => router.find(\"GET\", `/${uri}`)\n \n return { add, find } as const\n }", "additions": 2, "deletions": 2 } ] }, { "pr": 7837, "title": "fix(SqlMessageStorage): preserve reply IDs in by-ID reads", "url": "https://github.com/Effect-TS/effect/pull/7837", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T06:14:08Z", "mergedAt": "2026-09-04T03:34:24Z", "head": "e80bfffd78864b749f37bb53e3c38efb1e7e20f4", "files": [ { "filename": "packages/effect/src/unstable/cluster/SqlMessageStorage.ts", "patch": "@@ -666,7 +666,7 @@ export const makeEncoded: (options?: {\n unprocessedMessagesById(ids, now) {\n const idArr = Array.from(ids, (id) => String(id))\n return sql`\n- SELECT m.*, r.id as reply_id, r.kind as reply_kind, r.payload as reply_payload, r.sequence as reply_sequence\n+ SELECT m.*, r.id as reply_reply_id, r.kind as reply_kind, r.payload as reply_payload, r.sequence as reply_sequence\n FROM ${messagesTableSql} m\n LEFT JOIN ${repliesTableSql} r ON r.id = m.last_reply_id\n WHERE m.id IN (${sql.literal(idArr.join(\",\"))})", "additions": 1, "deletions": 1 } ] }, { "pr": 7840, "title": "fix(DurableClock): preserve explicit zero in-memory thresholds", "url": "https://github.com/Effect-TS/effect/pull/7840", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T06:31:50Z", "mergedAt": "2026-09-04T03:35:01Z", "head": "6e296d9c456a386d4a4c86b787fdab55f656b5de", "files": [ { "filename": "packages/effect/src/unstable/workflow/DurableClock.ts", "patch": "@@ -93,7 +93,7 @@ export const sleep: (\n return\n }\n \n- const inMemoryThreshold = options.inMemoryThreshold\n+ const inMemoryThreshold = options.inMemoryThreshold !== undefined\n ? Duration.fromInputUnsafe(options.inMemoryThreshold)\n : defaultInMemoryThreshold\n ", "additions": 1, "deletions": 1 } ] }, { "pr": 7872, "title": "fix(Formatter): preserve defined falsy Error causes", "url": "https://github.com/Effect-TS/effect/pull/7872", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T11:14:33Z", "mergedAt": "2026-09-03T22:43:05Z", "head": "87770ba782b8404e20be34d060334adbb057a19b", "files": [ { "filename": "packages/effect/src/Formatter.ts", "patch": "@@ -169,7 +169,7 @@ export function format(input: unknown, options?: {\n v[\"toString\"] !== Array.prototype.toString\n ) {\n const s = safeToString(v)\n- output = v instanceof Error && v.cause ? `${s} (cause: ${recur(v.cause, d)})` : s\n+ output = v instanceof Error && v.cause !== undefined ? `${s} (cause: ${recur(v.cause, d)})` : s\n } else if (Symbol.iterator in v) {\n output = `${v.constructor.name}(${recur(Array.from(v as any), d)})`\n } else {", "additions": 1, "deletions": 1 } ] }, { "pr": 7951, "title": "fix(sql-sqlite-wasm): start native message ports", "url": "https://github.com/Effect-TS/effect/pull/7951", "state": "MERGED", "isDraft": false, "createdAt": "2026-09-03T19:50:53Z", "mergedAt": "2026-09-04T03:32:25Z", "head": "5f9d69215befb00d39a8d7209a93331f40e9a072", "files": [ { "filename": "packages/sql/sqlite-wasm/src/OpfsWorker.ts", "patch": "@@ -29,7 +29,7 @@ const classifyError = (cause: unknown, message: string, operation: string) =>\n * @since 4.0.0\n */\n export interface OpfsWorkerConfig {\n- readonly port: EventTarget & Pick\n+ readonly port: EventTarget & Pick & Partial>\n readonly dbName: string\n }\n \n@@ -114,6 +114,7 @@ export const run = (\n }\n }\n options.port.addEventListener(\"message\", onMessage)\n+ options.port.start?.()\n options.port.postMessage([\"ready\", undefined, undefined])\n return Effect.sync(() => {\n options.port.removeEventListener(\"message\", onMessage)", "additions": 2, "deletions": 1 }, { "filename": "packages/sql/sqlite-wasm/src/SqliteClient.ts", "patch": "@@ -343,6 +343,9 @@ export const make = (\n }\n }\n port.addEventListener(\"message\", onMessage)\n+ if (\"start\" in port) {\n+ port.start()\n+ }\n \n function onError(cause: Event) {\n const exit = Exit.fail(\n@@ -362,7 +365,7 @@ export const make = (\n yield* Scope.addFinalizer(\n scope,\n Effect.sync(() => {\n- worker.removeEventListener(\"message\", onMessage)\n+ port.removeEventListener(\"message\", onMessage)\n worker.removeEventListener(\"error\", onError)\n })\n )", "additions": 4, "deletions": 1 } ] } ] }