mirror of https://github.com/webpack/webpack.git
				
				
				
			
		
			
				
	
	
		
			104 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			104 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
/*
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	MIT License http://www.opensource.org/licenses/mit-license.php
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	Author Sean Larkin @thelarkinn
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*/
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"use strict";
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const EntrypointsOverSizeLimitWarning = require("./EntrypointsOverSizeLimitWarning");
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const AssetsOverSizeLimitWarning = require("./AssetsOverSizeLimitWarning");
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const NoAsyncChunksWarning = require("./NoAsyncChunksWarning");
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module.exports = class SizeLimitsPlugin {
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	constructor(options) {
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		this.hints = options.hints;
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		this.maxAssetSize = options.maxAssetSize;
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		this.maxEntrypointSize = options.maxEntrypointSize;
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		this.assetFilter = options.assetFilter;
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	}
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	apply(compiler) {
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		const entrypointSizeLimit = this.maxEntrypointSize;
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		const assetSizeLimit = this.maxAssetSize;
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		const hints = this.hints;
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		const assetFilter = this.assetFilter || (asset => !(asset.endsWith(".map")));
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		compiler.hooks.afterEmit.tap("SizeLimitsPlugin", (compilation) => {
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			const warnings = [];
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			const getEntrypointSize = entrypoint =>
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				entrypoint.getFiles()
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				.reduce((currentSize, file) => {
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					if(assetFilter(file) && compilation.assets[file]) {
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						return currentSize + compilation.assets[file].size();
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					}
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					return currentSize;
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				}, 0);
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			const assetsOverSizeLimit = [];
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			for(const assetName of Object.keys(compilation.assets)) {
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				if(!assetFilter(assetName)) {
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					continue;
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				}
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				const asset = compilation.assets[assetName];
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				const size = asset.size();
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				if(size > assetSizeLimit) {
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					assetsOverSizeLimit.push({
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						name: assetName,
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						size: size,
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					});
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					asset.isOverSizeLimit = true;
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				}
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			}
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			const entrypointsOverLimit = [];
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			for(const pair of compilation.entrypoints) {
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				const name = pair[0];
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				const entry = pair[1];
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				const size = getEntrypointSize(entry, compilation);
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				if(size > entrypointSizeLimit) {
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					entrypointsOverLimit.push({
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						name: name,
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						size: size,
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						files: entry.getFiles().filter(assetFilter)
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					});
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					entry.isOverSizeLimit = true;
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				}
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			}
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			if(hints) {
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				// 1. Individual Chunk: Size < 250kb
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				// 2. Collective Initial Chunks [entrypoint] (Each Set?): Size < 250kb
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				// 3. No Async Chunks
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				// if !1, then 2, if !2 return
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				if(assetsOverSizeLimit.length > 0) {
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					warnings.push(
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						new AssetsOverSizeLimitWarning(
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							assetsOverSizeLimit,
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							assetSizeLimit));
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				}
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				if(entrypointsOverLimit.length > 0) {
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					warnings.push(
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						new EntrypointsOverSizeLimitWarning(
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							entrypointsOverLimit,
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							entrypointSizeLimit));
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				}
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				if(warnings.length > 0) {
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					const hasAsyncChunks = compilation.chunks.filter(chunk => !chunk.canBeInitial()).length > 0;
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					if(!hasAsyncChunks) {
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						warnings.push(new NoAsyncChunksWarning());
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					}
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					if(hints === "error") {
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						compilation.errors.push(...warnings);
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					} else {
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						compilation.warnings.push(...warnings);
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					}
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				}
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			}
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		});
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	}
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};
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