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Merge pull request #121 from tjenkinson/add-chunk-retry-support
Add `chunkLoadRetry` option for reloading chunks
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| const { RuntimeGlobals } = require('webpack') | ||
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| const name = 'RetryChunkLoadPlugin' | ||
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| class RetryChunkLoadPlugin { | ||
| #maxAttempts | ||
| #base | ||
| #multiplier | ||
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| constructor({ maxAttempts = 5, base = 1.8, multiplier = 500 } = {}) { | ||
| if (typeof maxAttempts !== 'number' || maxAttempts < 1) { | ||
| throw new Error('Invalid `maxAttempts`') | ||
| } | ||
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| if (typeof base !== 'number' || base < 1) { | ||
| throw new Error('Invalid `base`') | ||
| } | ||
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| if (typeof multiplier !== 'number' || multiplier < 0) { | ||
| throw new Error('Invalid `multiplier`') | ||
| } | ||
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| this.#maxAttempts = maxAttempts | ||
| this.#base = base | ||
| this.#multiplier = multiplier | ||
| } | ||
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| apply(compiler) { | ||
| compiler.hooks.thisCompilation.tap(name, (compilation) => { | ||
| const { mainTemplate, runtimeTemplate } = compilation | ||
| mainTemplate.hooks.localVars.tap({ name, stage: 1 }, (source) => { | ||
| const script = runtimeTemplate.iife( | ||
| '', | ||
| ` | ||
| if (typeof ${RuntimeGlobals.require} !== "undefined") { | ||
| var initialEnsureChunk = ${RuntimeGlobals.ensureChunk}; | ||
| ${RuntimeGlobals.ensureChunk} = function (chunkId) { | ||
| var attemptCount = 0; | ||
| return new Promise(function (resolve, reject) { | ||
| var load = function () { | ||
| initialEnsureChunk(chunkId).then((res) => resolve(res)).catch((e) => { | ||
| if (++attemptCount >= ${this.#maxAttempts}) { | ||
| reject(e); | ||
| } else { | ||
| setTimeout(() => load(), (${this.#base} ** (attemptCount - 1)) * ${this.#multiplier}) | ||
| } | ||
| }); | ||
| }; | ||
| load(); | ||
| }); | ||
| }; | ||
| }` | ||
| ) | ||
| return source + script + ';' | ||
| }) | ||
| }) | ||
| } | ||
| } | ||
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| module.exports = RetryChunkLoadPlugin |
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