75 lines
2.4 KiB
JavaScript
75 lines
2.4 KiB
JavaScript
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'use strict';
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const fs = require('fs');
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const path = require('path');
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const MemoryFileSystem = require('memory-fs');
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const pathabs = require('path-is-absolute');
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const { chalk } = require('webpack-log');
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const NodeOutputFileSystem = require('webpack/lib/node/NodeOutputFileSystem');
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const DevMiddlewareError = require('./DevMiddlewareError');
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const { mkdirp } = new NodeOutputFileSystem();
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module.exports = {
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toDisk(context) {
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const compilers = context.compiler.compilers || [context.compiler];
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for (const compiler of compilers) {
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compiler.hooks.afterEmit.tap('WebpackDevMiddleware', (compilation) => {
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const { assets } = compilation;
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const { log } = context;
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const { writeToDisk: filter } = context.options;
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let { outputPath } = compiler;
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if (outputPath === '/') {
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outputPath = compiler.context;
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}
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for (const assetPath of Object.keys(assets)) {
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const asset = assets[assetPath];
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const source = asset.source();
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const isAbsolute = pathabs(assetPath);
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const writePath = isAbsolute ? assetPath : path.join(outputPath, assetPath);
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const relativePath = path.relative(process.cwd(), writePath);
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const allowWrite = filter && typeof filter === 'function' ? filter(writePath) : true;
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if (allowWrite) {
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let output = source;
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mkdirp.sync(path.dirname(writePath));
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if (Array.isArray(source)) {
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output = source.join('\n');
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}
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try {
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fs.writeFileSync(writePath, output, 'utf-8');
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log.debug(chalk`{cyan Asset written to disk}: ${relativePath}`);
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} catch (e) {
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log.error(`Unable to write asset to disk:\n${e}`);
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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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setFs(context, compiler) {
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if (typeof compiler.outputPath === 'string' && !pathabs.posix(compiler.outputPath) && !pathabs.win32(compiler.outputPath)) {
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throw new DevMiddlewareError('`output.path` needs to be an absolute path or `/`.');
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}
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let fileSystem;
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// store our files in memory
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const isMemoryFs = !compiler.compilers && compiler.outputFileSystem instanceof MemoryFileSystem;
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if (isMemoryFs) {
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fileSystem = compiler.outputFileSystem;
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} else {
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fileSystem = new MemoryFileSystem();
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compiler.outputFileSystem = fileSystem;
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}
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context.fs = fileSystem;
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}
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};
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