From f74684396b4dfe53deb8c6a052d2e7375b977e31 Mon Sep 17 00:00:00 2001 From: Brent Schroeter Date: Mon, 2 Feb 2026 07:34:15 +0000 Subject: [PATCH] init repo --- .gitignore | 2 + LICENSE | 18 ++ README.md | 35 ++ mise.toml | 5 + package-lock.json | 799 ++++++++++++++++++++++++++++++++++++++++++++++ package.json | 26 ++ rollup.config.mjs | 19 ++ src/index.ts | 137 ++++++++ tsconfig.json | 19 ++ 9 files changed, 1060 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.md create mode 100644 mise.toml create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 rollup.config.mjs create mode 100644 src/index.ts create mode 100644 tsconfig.json diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..f06235c --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +node_modules +dist diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..46db8ad --- /dev/null +++ b/LICENSE @@ -0,0 +1,18 @@ +Copyright (c) 2026 Brent Schroeter + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of +the Software, and to permit persons to whom the Software is furnished to do so, +subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS +FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS +OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..cf4ecb4 --- /dev/null +++ b/README.md @@ -0,0 +1,35 @@ +# Attq! + +An async tiny task queue (and related utilities), with zero dependencies. Attq +provides a data structure that executes an asynchronous callback sequentially on +a flexible list. It is designed to facilitate in-order client-server message +passing with bells and whistles including batching, throttling, and configurable +retries. **Work in progress.** + +## Example + +```typescript +import { AsyncTaskQueue } from "attq"; + +const q = new AsyncTaskQueue( + (nums: number[]) => fetch(`/refine?macrodata=${nums.join(",")}`), +) + // Handler will receive up to 4 items per batch. + .batchSize(4) + // Handler will be called at most once per 100 milliseconds. + .throttleMs(100); + +// Add items to the queue. +for (let n = 0; n < 1000; n++) { + q.push(n); +} + +await new Promise((resolve) => setTimeout(resolve, 5000)); + +console.log(q.size()); // Should display >=800 items remaining. + +// Stop processing items if any causes an exception. +q.onError(() => { + q.drain(); +}); +``` diff --git a/mise.toml b/mise.toml new file mode 100644 index 0000000..262655d --- /dev/null +++ b/mise.toml @@ -0,0 +1,5 @@ +[tools] +node = "24" + +[tasks.build] +run = "npx rollup -c" diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..67a161f --- /dev/null +++ b/package-lock.json @@ -0,0 +1,799 @@ +{ + "name": "attq", + "version": "0.1.0-beta.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "attq", + "version": "0.1.0-beta.0", + "license": "MIT", + "devDependencies": { + "@rollup/plugin-terser": "^0.4.4", + "@rollup/plugin-typescript": "^12.3.0", + "rollup": "^4.57.1", + "tslib": "^2.8.1", + "typescript": "^5.9.3" + } + }, + "node_modules/@jridgewell/gen-mapping": { + "version": "0.3.13", + "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz", + "integrity": "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==", + "dev": true, + "license": "MIT", + "dependencies": { + "@jridgewell/sourcemap-codec": "^1.5.0", + "@jridgewell/trace-mapping": "^0.3.24" + } + }, + "node_modules/@jridgewell/resolve-uri": { + "version": "3.1.2", + "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz", + "integrity": "sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==", + "dev": true, + "license": "MIT", + "engines": { + "node": ">=6.0.0" + } + }, + "node_modules/@jridgewell/source-map": { + "version": "0.3.11", + "resolved": "https://registry.npmjs.org/@jridgewell/source-map/-/source-map-0.3.11.tgz", + "integrity": "sha512-ZMp1V8ZFcPG5dIWnQLr3NSI1MiCU7UETdS/A0G8V/XWHvJv3ZsFqutJn1Y5RPmAPX6F3BiE397OqveU/9NCuIA==", + "dev": true, + "license": "MIT", + "dependencies": { + "@jridgewell/gen-mapping": "^0.3.5", + "@jridgewell/trace-mapping": "^0.3.25" + } + }, + "node_modules/@jridgewell/sourcemap-codec": { + "version": "1.5.5", + "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.5.tgz", + "integrity": "sha512-cYQ9310grqxueWbl+WuIUIaiUaDcj7WOq5fVhEljNVgRfOUhY9fy2zTvfoqWsnebh8Sl70VScFbICvJnLKB0Og==", + "dev": true, + "license": "MIT" + }, + "node_modules/@jridgewell/trace-mapping": { + "version": "0.3.31", + "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.31.tgz", + "integrity": "sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw==", + "dev": true, + "license": "MIT", + "dependencies": { + "@jridgewell/resolve-uri": "^3.1.0", + "@jridgewell/sourcemap-codec": "^1.4.14" + } + }, + "node_modules/@rollup/plugin-terser": { + "version": "0.4.4", + "resolved": "https://registry.npmjs.org/@rollup/plugin-terser/-/plugin-terser-0.4.4.tgz", + "integrity": "sha512-XHeJC5Bgvs8LfukDwWZp7yeqin6ns8RTl2B9avbejt6tZqsqvVoWI7ZTQrcNsfKEDWBTnTxM8nMDkO2IFFbd0A==", + "dev": true, + "license": "MIT", + "dependencies": { + "serialize-javascript": "^6.0.1", + "smob": "^1.0.0", + "terser": "^5.17.4" + }, + "engines": { + "node": ">=14.0.0" + }, + "peerDependencies": { + "rollup": "^2.0.0||^3.0.0||^4.0.0" + }, + "peerDependenciesMeta": { + "rollup": { + "optional": true + } + } + }, + "node_modules/@rollup/plugin-typescript": { + "version": "12.3.0", + "resolved": "https://registry.npmjs.org/@rollup/plugin-typescript/-/plugin-typescript-12.3.0.tgz", + "integrity": "sha512-7DP0/p7y3t67+NabT9f8oTBFE6gGkto4SA6Np2oudYmZE/m1dt8RB0SjL1msMxFpLo631qjRCcBlAbq1ml/Big==", + "dev": true, + "license": "MIT", + "dependencies": { + "@rollup/pluginutils": "^5.1.0", + "resolve": "^1.22.1" + }, + "engines": { + "node": ">=14.0.0" + }, + "peerDependencies": { + "rollup": "^2.14.0||^3.0.0||^4.0.0", + "tslib": "*", + "typescript": ">=3.7.0" + }, + "peerDependenciesMeta": { + "rollup": { + "optional": true + }, + "tslib": { + "optional": true + } + } + }, + "node_modules/@rollup/pluginutils": { + "version": "5.3.0", + "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-5.3.0.tgz", + "integrity": "sha512-5EdhGZtnu3V88ces7s53hhfK5KSASnJZv8Lulpc04cWO3REESroJXg73DFsOmgbU2BhwV0E20bu2IDZb3VKW4Q==", + "dev": true, + "license": "MIT", + "dependencies": { + "@types/estree": "^1.0.0", + "estree-walker": "^2.0.2", + "picomatch": "^4.0.2" + }, + "engines": { + "node": ">=14.0.0" + }, + "peerDependencies": { + "rollup": "^1.20.0||^2.0.0||^3.0.0||^4.0.0" + }, + "peerDependenciesMeta": { + "rollup": { + "optional": true + } + } + }, + "node_modules/@rollup/rollup-android-arm-eabi": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.57.1.tgz", + "integrity": "sha512-A6ehUVSiSaaliTxai040ZpZ2zTevHYbvu/lDoeAteHI8QnaosIzm4qwtezfRg1jOYaUmnzLX1AOD6Z+UJjtifg==", + "cpu": [ + "arm" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "android" + ] + }, + "node_modules/@rollup/rollup-android-arm64": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.57.1.tgz", + "integrity": "sha512-dQaAddCY9YgkFHZcFNS/606Exo8vcLHwArFZ7vxXq4rigo2bb494/xKMMwRRQW6ug7Js6yXmBZhSBRuBvCCQ3w==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "android" + ] + }, + "node_modules/@rollup/rollup-darwin-arm64": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.57.1.tgz", + "integrity": "sha512-crNPrwJOrRxagUYeMn/DZwqN88SDmwaJ8Cvi/TN1HnWBU7GwknckyosC2gd0IqYRsHDEnXf328o9/HC6OkPgOg==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "darwin" + ] + }, + "node_modules/@rollup/rollup-darwin-x64": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.57.1.tgz", + "integrity": "sha512-Ji8g8ChVbKrhFtig5QBV7iMaJrGtpHelkB3lsaKzadFBe58gmjfGXAOfI5FV0lYMH8wiqsxKQ1C9B0YTRXVy4w==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "darwin" + ] + }, + "node_modules/@rollup/rollup-freebsd-arm64": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-arm64/-/rollup-freebsd-arm64-4.57.1.tgz", + "integrity": "sha512-R+/WwhsjmwodAcz65guCGFRkMb4gKWTcIeLy60JJQbXrJ97BOXHxnkPFrP+YwFlaS0m+uWJTstrUA9o+UchFug==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "freebsd" + ] + }, + "node_modules/@rollup/rollup-freebsd-x64": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-x64/-/rollup-freebsd-x64-4.57.1.tgz", + "integrity": "sha512-IEQTCHeiTOnAUC3IDQdzRAGj3jOAYNr9kBguI7MQAAZK3caezRrg0GxAb6Hchg4lxdZEI5Oq3iov/w/hnFWY9Q==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "freebsd" + ] + }, + "node_modules/@rollup/rollup-linux-arm-gnueabihf": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.57.1.tgz", + "integrity": "sha512-F8sWbhZ7tyuEfsmOxwc2giKDQzN3+kuBLPwwZGyVkLlKGdV1nvnNwYD0fKQ8+XS6hp9nY7B+ZeK01EBUE7aHaw==", + "cpu": [ + "arm" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-arm-musleabihf": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.57.1.tgz", + "integrity": "sha512-rGfNUfn0GIeXtBP1wL5MnzSj98+PZe/AXaGBCRmT0ts80lU5CATYGxXukeTX39XBKsxzFpEeK+Mrp9faXOlmrw==", + "cpu": [ + "arm" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-arm64-gnu": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.57.1.tgz", + "integrity": "sha512-MMtej3YHWeg/0klK2Qodf3yrNzz6CGjo2UntLvk2RSPlhzgLvYEB3frRvbEF2wRKh1Z2fDIg9KRPe1fawv7C+g==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-arm64-musl": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.57.1.tgz", + "integrity": "sha512-1a/qhaaOXhqXGpMFMET9VqwZakkljWHLmZOX48R0I/YLbhdxr1m4gtG1Hq7++VhVUmf+L3sTAf9op4JlhQ5u1Q==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-loong64-gnu": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-gnu/-/rollup-linux-loong64-gnu-4.57.1.tgz", + "integrity": "sha512-QWO6RQTZ/cqYtJMtxhkRkidoNGXc7ERPbZN7dVW5SdURuLeVU7lwKMpo18XdcmpWYd0qsP1bwKPf7DNSUinhvA==", + "cpu": [ + "loong64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-loong64-musl": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-musl/-/rollup-linux-loong64-musl-4.57.1.tgz", + "integrity": "sha512-xpObYIf+8gprgWaPP32xiN5RVTi/s5FCR+XMXSKmhfoJjrpRAjCuuqQXyxUa/eJTdAE6eJ+KDKaoEqjZQxh3Gw==", + "cpu": [ + "loong64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-ppc64-gnu": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-gnu/-/rollup-linux-ppc64-gnu-4.57.1.tgz", + "integrity": "sha512-4BrCgrpZo4hvzMDKRqEaW1zeecScDCR+2nZ86ATLhAoJ5FQ+lbHVD3ttKe74/c7tNT9c6F2viwB3ufwp01Oh2w==", + "cpu": [ + "ppc64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-ppc64-musl": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-musl/-/rollup-linux-ppc64-musl-4.57.1.tgz", + "integrity": "sha512-NOlUuzesGauESAyEYFSe3QTUguL+lvrN1HtwEEsU2rOwdUDeTMJdO5dUYl/2hKf9jWydJrO9OL/XSSf65R5+Xw==", + "cpu": [ + "ppc64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-riscv64-gnu": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.57.1.tgz", + "integrity": "sha512-ptA88htVp0AwUUqhVghwDIKlvJMD/fmL/wrQj99PRHFRAG6Z5nbWoWG4o81Nt9FT+IuqUQi+L31ZKAFeJ5Is+A==", + "cpu": [ + "riscv64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-riscv64-musl": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-musl/-/rollup-linux-riscv64-musl-4.57.1.tgz", + "integrity": "sha512-S51t7aMMTNdmAMPpBg7OOsTdn4tySRQvklmL3RpDRyknk87+Sp3xaumlatU+ppQ+5raY7sSTcC2beGgvhENfuw==", + "cpu": [ + "riscv64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-s390x-gnu": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.57.1.tgz", + "integrity": "sha512-Bl00OFnVFkL82FHbEqy3k5CUCKH6OEJL54KCyx2oqsmZnFTR8IoNqBF+mjQVcRCT5sB6yOvK8A37LNm/kPJiZg==", + "cpu": [ + "s390x" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-x64-gnu": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.57.1.tgz", + "integrity": "sha512-ABca4ceT4N+Tv/GtotnWAeXZUZuM/9AQyCyKYyKnpk4yoA7QIAuBt6Hkgpw8kActYlew2mvckXkvx0FfoInnLg==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-linux-x64-musl": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.57.1.tgz", + "integrity": "sha512-HFps0JeGtuOR2convgRRkHCekD7j+gdAuXM+/i6kGzQtFhlCtQkpwtNzkNj6QhCDp7DRJ7+qC/1Vg2jt5iSOFw==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ] + }, + "node_modules/@rollup/rollup-openbsd-x64": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-openbsd-x64/-/rollup-openbsd-x64-4.57.1.tgz", + "integrity": "sha512-H+hXEv9gdVQuDTgnqD+SQffoWoc0Of59AStSzTEj/feWTBAnSfSD3+Dql1ZruJQxmykT/JVY0dE8Ka7z0DH1hw==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "openbsd" + ] + }, + "node_modules/@rollup/rollup-openharmony-arm64": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-openharmony-arm64/-/rollup-openharmony-arm64-4.57.1.tgz", + "integrity": "sha512-4wYoDpNg6o/oPximyc/NG+mYUejZrCU2q+2w6YZqrAs2UcNUChIZXjtafAiiZSUc7On8v5NyNj34Kzj/Ltk6dQ==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "openharmony" + ] + }, + "node_modules/@rollup/rollup-win32-arm64-msvc": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.57.1.tgz", + "integrity": "sha512-O54mtsV/6LW3P8qdTcamQmuC990HDfR71lo44oZMZlXU4tzLrbvTii87Ni9opq60ds0YzuAlEr/GNwuNluZyMQ==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "win32" + ] + }, + "node_modules/@rollup/rollup-win32-ia32-msvc": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.57.1.tgz", + "integrity": "sha512-P3dLS+IerxCT/7D2q2FYcRdWRl22dNbrbBEtxdWhXrfIMPP9lQhb5h4Du04mdl5Woq05jVCDPCMF7Ub0NAjIew==", + "cpu": [ + "ia32" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "win32" + ] + }, + "node_modules/@rollup/rollup-win32-x64-gnu": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-gnu/-/rollup-win32-x64-gnu-4.57.1.tgz", + "integrity": "sha512-VMBH2eOOaKGtIJYleXsi2B8CPVADrh+TyNxJ4mWPnKfLB/DBUmzW+5m1xUrcwWoMfSLagIRpjUFeW5CO5hyciQ==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "win32" + ] + }, + "node_modules/@rollup/rollup-win32-x64-msvc": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.57.1.tgz", + "integrity": "sha512-mxRFDdHIWRxg3UfIIAwCm6NzvxG0jDX/wBN6KsQFTvKFqqg9vTrWUE68qEjHt19A5wwx5X5aUi2zuZT7YR0jrA==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "win32" + ] + }, + "node_modules/@types/estree": { + "version": "1.0.8", + "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz", + "integrity": "sha512-dWHzHa2WqEXI/O1E9OjrocMTKJl2mSrEolh1Iomrv6U+JuNwaHXsXx9bLu5gG7BUWFIN0skIQJQ/L1rIex4X6w==", + "dev": true, + "license": "MIT" + }, + "node_modules/acorn": { + "version": "8.15.0", + "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.15.0.tgz", + "integrity": "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==", + "dev": true, + "license": "MIT", + "bin": { + "acorn": "bin/acorn" + }, + "engines": { + "node": ">=0.4.0" + } + }, + "node_modules/buffer-from": { + "version": "1.1.2", + "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz", + "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==", + "dev": true, + "license": "MIT" + }, + "node_modules/commander": { + "version": "2.20.3", + "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz", + "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==", + "dev": true, + "license": "MIT" + }, + "node_modules/estree-walker": { + "version": "2.0.2", + "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-2.0.2.tgz", + "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==", + "dev": true, + "license": "MIT" + }, + "node_modules/fsevents": { + "version": "2.3.3", + "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz", + "integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==", + "dev": true, + "hasInstallScript": true, + "license": "MIT", + "optional": true, + "os": [ + "darwin" + ], + "engines": { + "node": "^8.16.0 || ^10.6.0 || >=11.0.0" + } + }, + "node_modules/function-bind": { + "version": "1.1.2", + "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz", + "integrity": "sha512-7XHNxH7qX9xG5mIwxkhumTox/MIRNcOgDrxWsMt2pAr23WHp6MrRlN7FBSFpCpr+oVO0F744iUgR82nJMfG2SA==", + "dev": true, + "license": "MIT", + "funding": { + "url": "https://github.com/sponsors/ljharb" + } + }, + "node_modules/hasown": { + "version": "2.0.2", + "resolved": "https://registry.npmjs.org/hasown/-/hasown-2.0.2.tgz", + "integrity": "sha512-0hJU9SCPvmMzIBdZFqNPXWa6dqh7WdH0cII9y+CyS8rG3nL48Bclra9HmKhVVUHyPWNH5Y7xDwAB7bfgSjkUMQ==", + "dev": true, + "license": "MIT", + "dependencies": { + "function-bind": "^1.1.2" + }, + "engines": { + "node": ">= 0.4" + } + }, + "node_modules/is-core-module": { + "version": "2.16.1", + "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.16.1.tgz", + "integrity": "sha512-UfoeMA6fIJ8wTYFEUjelnaGI67v6+N7qXJEvQuIGa99l4xsCruSYOVSQ0uPANn4dAzm8lkYPaKLrrijLq7x23w==", + "dev": true, + "license": "MIT", + "dependencies": { + "hasown": "^2.0.2" + }, + "engines": { + "node": ">= 0.4" + }, + "funding": { + "url": "https://github.com/sponsors/ljharb" + } + }, + "node_modules/path-parse": { + "version": "1.0.7", + "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz", + "integrity": "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==", + "dev": true, + "license": "MIT" + }, + "node_modules/picomatch": { + "version": "4.0.3", + "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz", + "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==", + "dev": true, + "license": "MIT", + "engines": { + "node": ">=12" + }, + "funding": { + "url": "https://github.com/sponsors/jonschlinkert" + } + }, + "node_modules/randombytes": { + "version": "2.1.0", + "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz", + "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==", + "dev": true, + "license": "MIT", + "dependencies": { + "safe-buffer": "^5.1.0" + } + }, + "node_modules/resolve": { + "version": "1.22.11", + "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.11.tgz", + "integrity": "sha512-RfqAvLnMl313r7c9oclB1HhUEAezcpLjz95wFH4LVuhk9JF/r22qmVP9AMmOU4vMX7Q8pN8jwNg/CSpdFnMjTQ==", + "dev": true, + "license": "MIT", + "dependencies": { + "is-core-module": "^2.16.1", + "path-parse": "^1.0.7", + "supports-preserve-symlinks-flag": "^1.0.0" + }, + "bin": { + "resolve": "bin/resolve" + }, + "engines": { + "node": ">= 0.4" + }, + "funding": { + "url": "https://github.com/sponsors/ljharb" + } + }, + "node_modules/rollup": { + "version": "4.57.1", + "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.57.1.tgz", + "integrity": "sha512-oQL6lgK3e2QZeQ7gcgIkS2YZPg5slw37hYufJ3edKlfQSGGm8ICoxswK15ntSzF/a8+h7ekRy7k7oWc3BQ7y8A==", + "dev": true, + "license": "MIT", + "peer": true, + "dependencies": { + "@types/estree": "1.0.8" + }, + "bin": { + "rollup": "dist/bin/rollup" + }, + "engines": { + "node": ">=18.0.0", + "npm": ">=8.0.0" + }, + "optionalDependencies": { + "@rollup/rollup-android-arm-eabi": "4.57.1", + "@rollup/rollup-android-arm64": "4.57.1", + "@rollup/rollup-darwin-arm64": "4.57.1", + "@rollup/rollup-darwin-x64": "4.57.1", + "@rollup/rollup-freebsd-arm64": "4.57.1", + "@rollup/rollup-freebsd-x64": "4.57.1", + "@rollup/rollup-linux-arm-gnueabihf": "4.57.1", + "@rollup/rollup-linux-arm-musleabihf": "4.57.1", + "@rollup/rollup-linux-arm64-gnu": "4.57.1", + "@rollup/rollup-linux-arm64-musl": "4.57.1", + "@rollup/rollup-linux-loong64-gnu": "4.57.1", + "@rollup/rollup-linux-loong64-musl": "4.57.1", + "@rollup/rollup-linux-ppc64-gnu": "4.57.1", + "@rollup/rollup-linux-ppc64-musl": "4.57.1", + "@rollup/rollup-linux-riscv64-gnu": "4.57.1", + "@rollup/rollup-linux-riscv64-musl": "4.57.1", + "@rollup/rollup-linux-s390x-gnu": "4.57.1", + "@rollup/rollup-linux-x64-gnu": "4.57.1", + "@rollup/rollup-linux-x64-musl": "4.57.1", + "@rollup/rollup-openbsd-x64": "4.57.1", + "@rollup/rollup-openharmony-arm64": "4.57.1", + "@rollup/rollup-win32-arm64-msvc": "4.57.1", + "@rollup/rollup-win32-ia32-msvc": "4.57.1", + "@rollup/rollup-win32-x64-gnu": "4.57.1", + "@rollup/rollup-win32-x64-msvc": "4.57.1", + "fsevents": "~2.3.2" + } + }, + "node_modules/safe-buffer": { + "version": "5.2.1", + "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz", + "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==", + "dev": true, + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/feross" + }, + { + "type": "patreon", + "url": "https://www.patreon.com/feross" + }, + { + "type": "consulting", + "url": "https://feross.org/support" + } + ], + "license": "MIT" + }, + "node_modules/serialize-javascript": { + "version": "6.0.2", + "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-6.0.2.tgz", + "integrity": "sha512-Saa1xPByTTq2gdeFZYLLo+RFE35NHZkAbqZeWNd3BpzppeVisAqpDjcp8dyf6uIvEqJRd46jemmyA4iFIeVk8g==", + "dev": true, + "license": "BSD-3-Clause", + "dependencies": { + "randombytes": "^2.1.0" + } + }, + "node_modules/smob": { + "version": "1.5.0", + "resolved": "https://registry.npmjs.org/smob/-/smob-1.5.0.tgz", + "integrity": "sha512-g6T+p7QO8npa+/hNx9ohv1E5pVCmWrVCUzUXJyLdMmftX6ER0oiWY/w9knEonLpnOp6b6FenKnMfR8gqwWdwig==", + "dev": true, + "license": "MIT" + }, + "node_modules/source-map": { + "version": "0.6.1", + "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz", + "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==", + "dev": true, + "license": "BSD-3-Clause", + "engines": { + "node": ">=0.10.0" + } + }, + "node_modules/source-map-support": { + "version": "0.5.21", + "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.21.tgz", + "integrity": "sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==", + "dev": true, + "license": "MIT", + "dependencies": { + "buffer-from": "^1.0.0", + "source-map": "^0.6.0" + } + }, + "node_modules/supports-preserve-symlinks-flag": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz", + "integrity": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==", + "dev": true, + "license": "MIT", + "engines": { + "node": ">= 0.4" + }, + "funding": { + "url": "https://github.com/sponsors/ljharb" + } + }, + "node_modules/terser": { + "version": "5.46.0", + "resolved": "https://registry.npmjs.org/terser/-/terser-5.46.0.tgz", + "integrity": "sha512-jTwoImyr/QbOWFFso3YoU3ik0jBBDJ6JTOQiy/J2YxVJdZCc+5u7skhNwiOR3FQIygFqVUPHl7qbbxtjW2K3Qg==", + "dev": true, + "license": "BSD-2-Clause", + "dependencies": { + "@jridgewell/source-map": "^0.3.3", + "acorn": "^8.15.0", + "commander": "^2.20.0", + "source-map-support": "~0.5.20" + }, + "bin": { + "terser": "bin/terser" + }, + "engines": { + "node": ">=10" + } + }, + "node_modules/tslib": { + "version": "2.8.1", + "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz", + "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==", + "dev": true, + "license": "0BSD", + "peer": true + }, + "node_modules/typescript": { + "version": "5.9.3", + "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz", + "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==", + "dev": true, + "license": "Apache-2.0", + "peer": true, + "bin": { + "tsc": "bin/tsc", + "tsserver": "bin/tsserver" + }, + "engines": { + "node": ">=14.17" + } + } + } +} diff --git a/package.json b/package.json new file mode 100644 index 0000000..c482961 --- /dev/null +++ b/package.json @@ -0,0 +1,26 @@ +{ + "name": "attq", + "version": "0.1.0-beta.0", + "description": "Async Tiny Task Queue", + "repository": { + "type": "git", + "url": "https://forge.secondsystemtech.com/brent/attq" + }, + "license": "MIT", + "author": "Brent Schroeter (https://brentsch.com)", + "browser": "dist/index.min.js", + "main": "dist/index.js", + "module": "dist/index.mjs", + "types": "dist/index.d.ts", + "scripts": { + "build": "mise run build", + "test": "mise run test" + }, + "devDependencies": { + "@rollup/plugin-terser": "^0.4.4", + "@rollup/plugin-typescript": "^12.3.0", + "rollup": "^4.57.1", + "tslib": "^2.8.1", + "typescript": "^5.9.3" + } +} diff --git a/rollup.config.mjs b/rollup.config.mjs new file mode 100644 index 0000000..fd9e2d3 --- /dev/null +++ b/rollup.config.mjs @@ -0,0 +1,19 @@ +import terser from "@rollup/plugin-terser"; +import typescript from "@rollup/plugin-typescript"; + +import pkg from "./package.json" with { type: "json" }; + +export default { + input: "src/index.ts", + output: [ + { + file: pkg.browser, + format: "umd", + name: "attq", + plugins: [terser()], + }, + { file: pkg.main, format: "cjs" }, + { file: pkg.module, format: "es" }, + ], + plugins: [typescript()], +}; diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 0000000..913a016 --- /dev/null +++ b/src/index.ts @@ -0,0 +1,137 @@ +/** + * Simple queue that executes an asynchronous handler on data in order. + */ +export class AsyncTaskQueue { + private _queue: T[] = []; + private readonly _handler: (item: T) => Promise; + private _errorHandler: (err: unknown) => unknown = console.error; + private _batchSize = 1; + private _throttleIntervalMs = 0; + private _processing: boolean = false; + + constructor(handler: (items: T[]) => Promise) { + this._handler = handler; + } + + /** + * Replaces the error handler for this queue. The error handler is called + * whenever the task handler throws. + * + * This method updates the queue in place and returns it, so method calls may + * be chained. + */ + onError(errorHandler: (err: unknown) => unknown): AsyncTaskQueue { + this._errorHandler = errorHandler; + return this; + } + + /** + * Sets batch size for this queue. Setting this value greater than 1 allows + * the queue to pass up to n items to the task handler each time it is called. + * + * This method updates the queue in place and returns it, so method calls may + * be chained. + */ + batchSize(batchSize: number): AsyncTaskQueue { + if (batchSize < 1) { + throw new Error("Batch size must be at least 1."); + } + this._batchSize = batchSize; + return this; + } + + /** + * Sets throttle interval for this queue. Setting this longer than 0 + * milliseconds will cause the queue to call the task handler at most once + * every n milliseconds. + * + * This method updates the queue in place and returns it, so method calls may + * be chained. + */ + throttleMs(intervalMs?: number): AsyncTaskQueue { + if (intervalMs < 0) { + throw new Error("Interval must be zero or more milliseconds."); + } + this._throttleIntervalMs = intervalMs; + return this; + } + + /** + * Adds an item to the back of the queue. + */ + push(item: T): void { + this._queue.push(item); + if (!this._processing) { + this._processAll().catch(console.error); + } + } + + /** + * Returns all unprocessed items and removes them from the queue. + */ + drain(): T[] { + const items = this._queue; + this._queue = []; + return items; + } + + /** + * Returns the number of unprocessed items in the queue. + */ + size(): number { + return this._queue.length; + } + + private async _processAll(): void { + // Control loop is very simple: a `while` loop in a single async "thread", + // which runs until the queue is empty and then waits for + // `this._processAll()` to be called again. Because the execution + // environment is single-threaded, the `this._processing` property is a + // sufficient stand-in for a mutex. + if (this._processing) { + throw new Error( + "Assertion error: attq should never process queue concurrently.", + ); + } + this._processing = true; + + while (this._queue.length > 0) { + const throttleIntervalMs = this._throttleIntervalMs; + const throttleTimeout = throttleIntervalMs + ? new Promise((resolve) => setTimeout(resolve, throttleIntervalMs)) + : Promise.resolve(); + + const items = this._queue.splice(0, this._batchSize); + await this._handler(items).catch(this._error_handler); + + await throttleTimeout; + } + + this._processing = false; + } +} + +/** + * Wraps an arbitrary async function with retry logic for exceptions. + */ +export function withRetry( + fn: (...args: T) => U, + { attempts = 6, backoffMs = (attempt) => 1000 * 2 ** attempt }: { + attempts: number; + backoffMs(attempt: number): number; + }, +): (...args: T) => U { + return async (...args: T) => { + for (let attempt = 0; attempt < attempts - 1; attempt += 1) { + try { + return await fn(...args); + } catch { + const delay = backoffMs(attempt); + await new Promise((resolve) => setTimeout(resolve, delay)); + } + } + // Preferably run the final attempt without a try/catch block so that thrown + // exceptions get a clean stack trace. + return await fn(...args); + }; +} diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..639e354 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,19 @@ +{ + "compilerOptions": { + "esModuleInterop": true, + "skipLibCheck": true, + "target": "es2022", + "allowJs": false, + "resolveJsonModule": true, + "moduleDetection": "force", + "isolatedModules": true, + "verbatimModuleSyntax": true, + "strict": true, + "noUncheckedIndexedAccess": true, + "noEmit": true, + "declaration": true, + "declarationDir": "dist", + "module": "preserve", + "lib": ["es2022"] + } +}