init repo
This commit is contained in:
Brent Schroeter
commit
f74684396b
9 changed files with 1060 additions and 0 deletions
2
.gitignore
vendored
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2
.gitignore
vendored
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@ -0,0 +1,2 @@
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node_modules
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dist
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||||
18
LICENSE
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18
LICENSE
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@ -0,0 +1,18 @@
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|||
Copyright (c) 2026 Brent Schroeter
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|
||||
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.
|
||||
35
README.md
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35
README.md
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@ -0,0 +1,35 @@
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|||
# Attq!
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An async tiny task queue (and related utilities), with zero dependencies. Attq
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provides a data structure that executes an asynchronous callback sequentially on
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a flexible list. It is designed to facilitate in-order client-server message
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||||
passing with bells and whistles including batching, throttling, and configurable
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retries. **Work in progress.**
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|
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## Example
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||||
|
||||
```typescript
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import { AsyncTaskQueue } from "attq";
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const q = new AsyncTaskQueue<number>(
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(nums: number[]) => fetch(`/refine?macrodata=${nums.join(",")}`),
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)
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// Handler will receive up to 4 items per batch.
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.batchSize(4)
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// Handler will be called at most once per 100 milliseconds.
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.throttleMs(100);
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|
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// Add items to the queue.
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for (let n = 0; n < 1000; n++) {
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q.push(n);
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}
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await new Promise((resolve) => setTimeout(resolve, 5000));
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|
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console.log(q.size()); // Should display >=800 items remaining.
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|
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// Stop processing items if any causes an exception.
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q.onError(() => {
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q.drain();
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});
|
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```
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5
mise.toml
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5
mise.toml
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@ -0,0 +1,5 @@
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[tools]
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node = "24"
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||||
|
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[tasks.build]
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run = "npx rollup -c"
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799
package-lock.json
generated
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799
package-lock.json
generated
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@ -0,0 +1,799 @@
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|||
{
|
||||
"name": "attq",
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||||
"version": "0.1.0-beta.0",
|
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"lockfileVersion": 3,
|
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"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",
|
||||
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|
||||
"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",
|
||||
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|
||||
"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",
|
||||
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|
||||
"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",
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"cpu": [
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||||
"arm"
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|
||||
"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",
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"cpu": [
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"arm64"
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||||
"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",
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"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",
|
||||
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|
||||
"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",
|
||||
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|
||||
"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",
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||||
"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",
|
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"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",
|
||||
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"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",
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"cpu": [
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||||
"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",
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"cpu": [
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||||
"arm64"
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||||
],
|
||||
"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",
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"cpu": [
|
||||
"loong64"
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||||
],
|
||||
"dev": true,
|
||||
"license": "MIT",
|
||||
"optional": true,
|
||||
"os": [
|
||||
"linux"
|
||||
]
|
||||
},
|
||||
"node_modules/@rollup/rollup-linux-loong64-musl": {
|
||||
"version": "4.57.1",
|
||||
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"cpu": [
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||||
"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",
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"@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"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
26
package.json
Normal file
26
package.json
Normal file
|
|
@ -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"
|
||||
}
|
||||
}
|
||||
19
rollup.config.mjs
Normal file
19
rollup.config.mjs
Normal file
|
|
@ -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()],
|
||||
};
|
||||
137
src/index.ts
Normal file
137
src/index.ts
Normal file
|
|
@ -0,0 +1,137 @@
|
|||
/**
|
||||
* Simple queue that executes an asynchronous handler on data in order.
|
||||
*/
|
||||
export class AsyncTaskQueue<T> {
|
||||
private _queue: T[] = [];
|
||||
private readonly _handler: (item: T) => Promise<unknown>;
|
||||
private _errorHandler: (err: unknown) => unknown = console.error;
|
||||
private _batchSize = 1;
|
||||
private _throttleIntervalMs = 0;
|
||||
private _processing: boolean = false;
|
||||
|
||||
constructor(handler: (items: T[]) => Promise<unknown>) {
|
||||
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<T> {
|
||||
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<T> {
|
||||
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<T> {
|
||||
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<T, U extends Promise>(
|
||||
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);
|
||||
};
|
||||
}
|
||||
19
tsconfig.json
Normal file
19
tsconfig.json
Normal file
|
|
@ -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"]
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue