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webpack_runner.js
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webpack_runner.js
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const webpack = require('webpack');
const path = require('path');
const fs = require('fs');
function getStat(path) {
try {
const stat = fs.statSync(path);
return stat ? {
mtime: stat.mtimeMs,
size: stat.size,
inode: stat.ino,
isDirectory: stat.isDirectory()
} : null;
} catch {
return null;
}
}
class SaveStatePlugin {
constructor(inp) {
this.cache = new Map();
this.cachePath = inp.cachePath;
}
apply(compiler) {
compiler.hooks.afterCompile.tap('SaveStatePlugin', (compilation) => {
for (const file of compilation.fileDependencies) {
const stats = getStat(file)
if (stats && !stats.isDirectory) {
this.cache.set(file, {
name: file,
stats: {
mtime: stats.mtime,
size: stats.size,
inode: stats.inode
}
});
}
}
});
compiler.hooks.done.tap('SaveStatePlugin', (stats) => {
if (stats.hasErrors()) {
return;
}
fs.writeFile(this.cachePath, JSON.stringify(Array.from(this.cache.values()).sort((a, b) => {
if (a.name < b.name) {
return -1;
}
if (a.name > b.name) {
return 1;
}
return 0;
})), () => {
});
});
}
}
module.exports = (inp, callback) => {
const config = require(inp.configPath);
config.context = inp.resourcePath;
if (config.output && config.output.path) {
config.output.path = path.resolve(inp.resourcePath, config.output.path);
}
if (!config.plugins) {
config.plugins = [];
}
config.plugins.push(new SaveStatePlugin(inp));
webpack(config, (err, stats) => {
if (err) {
callback(err);
return;
}
if (stats.hasErrors()) {
callback(null, stats.toJson());
return;
}
callback(null, {});
});
};