90 lines
2.7 KiB
JavaScript
90 lines
2.7 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
const asyncLib = require("neo-async");
|
|
|
|
class CachePlugin {
|
|
constructor(cache) {
|
|
this.cache = cache || {};
|
|
this.FS_ACCURACY = 2000;
|
|
}
|
|
|
|
apply(compiler) {
|
|
if(Array.isArray(compiler.compilers)) {
|
|
compiler.compilers.forEach((c, idx) => {
|
|
new CachePlugin(this.cache[idx] = this.cache[idx] || {}).apply(c);
|
|
});
|
|
} else {
|
|
const registerCacheToCompiler = (compiler, cache) => {
|
|
compiler.hooks.thisCompilation.tap("CachePlugin", compilation => {
|
|
compilation.cache = cache;
|
|
compilation.hooks.childCompiler.tap("CachePlugin", (childCompiler, compilerName, compilerIndex) => {
|
|
if(cache) {
|
|
let childCache;
|
|
if(!cache.children) cache.children = {};
|
|
if(!cache.children[compilerName]) cache.children[compilerName] = [];
|
|
if(cache.children[compilerName][compilerIndex])
|
|
childCache = cache.children[compilerName][compilerIndex];
|
|
else
|
|
cache.children[compilerName].push(childCache = {});
|
|
registerCacheToCompiler(childCompiler, childCache);
|
|
}
|
|
});
|
|
});
|
|
};
|
|
registerCacheToCompiler(compiler, this.cache);
|
|
compiler.hooks.watchRun.tap("CachePlugin", () => {
|
|
this.watching = true;
|
|
});
|
|
compiler.hooks.run.tapAsync("CachePlugin", (compiler, callback) => {
|
|
if(!compiler._lastCompilationFileDependencies) return callback();
|
|
const fs = compiler.inputFileSystem;
|
|
const fileTs = compiler.fileTimestamps = new Map();
|
|
asyncLib.forEach(compiler._lastCompilationFileDependencies, (file, callback) => {
|
|
fs.stat(file, (err, stat) => {
|
|
if(err) {
|
|
if(err.code === "ENOENT") return callback();
|
|
return callback(err);
|
|
}
|
|
|
|
if(stat.mtime)
|
|
this.applyMtime(+stat.mtime);
|
|
|
|
fileTs.set(file, +stat.mtime || Infinity);
|
|
|
|
callback();
|
|
});
|
|
}, err => {
|
|
if(err) return callback(err);
|
|
|
|
for(const [file, ts] of fileTs) {
|
|
fileTs.set(file, ts + this.FS_ACCURACY);
|
|
}
|
|
|
|
callback();
|
|
});
|
|
});
|
|
compiler.hooks.afterCompile.tap("CachePlugin", compilation => {
|
|
compilation.compiler._lastCompilationFileDependencies = compilation.fileDependencies;
|
|
compilation.compiler._lastCompilationContextDependencies = compilation.contextDependencies;
|
|
});
|
|
}
|
|
}
|
|
|
|
/* istanbul ignore next */
|
|
applyMtime(mtime) {
|
|
if(this.FS_ACCURACY > 1 && mtime % 2 !== 0)
|
|
this.FS_ACCURACY = 1;
|
|
else if(this.FS_ACCURACY > 10 && mtime % 20 !== 0)
|
|
this.FS_ACCURACY = 10;
|
|
else if(this.FS_ACCURACY > 100 && mtime % 200 !== 0)
|
|
this.FS_ACCURACY = 100;
|
|
else if(this.FS_ACCURACY > 1000 && mtime % 2000 !== 0)
|
|
this.FS_ACCURACY = 1000;
|
|
}
|
|
}
|
|
module.exports = CachePlugin;
|