mirror of https://github.com/jkjoy/sunpeiwen.git
59 lines
1.5 KiB
JavaScript
59 lines
1.5 KiB
JavaScript
|
/*
|
||
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
||
|
|
Author Tobias Koppers @sokra
|
||
|
|
*/
|
||
|
|
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
/** @typedef {import("./Resolver")} Resolver */
|
||
|
|
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
|
||
|
|
|
||
|
|
module.exports = class FileExistsPlugin {
|
||
|
|
/**
|
||
|
|
* @param {string | ResolveStepHook} source source
|
||
|
|
* @param {string | ResolveStepHook} target target
|
||
|
|
*/
|
||
|
|
constructor(source, target) {
|
||
|
|
this.source = source;
|
||
|
|
this.target = target;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Resolver} resolver the resolver
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
apply(resolver) {
|
||
|
|
const target = resolver.ensureHook(this.target);
|
||
|
|
const fs = resolver.fileSystem;
|
||
|
|
resolver
|
||
|
|
.getHook(this.source)
|
||
|
|
.tapAsync("FileExistsPlugin", (request, resolveContext, callback) => {
|
||
|
|
const file = request.path;
|
||
|
|
if (!file) return callback();
|
||
|
|
fs.stat(file, (err, stat) => {
|
||
|
|
if (err || !stat) {
|
||
|
|
if (resolveContext.missingDependencies)
|
||
|
|
resolveContext.missingDependencies.add(file);
|
||
|
|
if (resolveContext.log) resolveContext.log(file + " doesn't exist");
|
||
|
|
return callback();
|
||
|
|
}
|
||
|
|
if (!stat.isFile()) {
|
||
|
|
if (resolveContext.missingDependencies)
|
||
|
|
resolveContext.missingDependencies.add(file);
|
||
|
|
if (resolveContext.log) resolveContext.log(file + " is not a file");
|
||
|
|
return callback();
|
||
|
|
}
|
||
|
|
if (resolveContext.fileDependencies)
|
||
|
|
resolveContext.fileDependencies.add(file);
|
||
|
|
resolver.doResolve(
|
||
|
|
target,
|
||
|
|
request,
|
||
|
|
"existing file: " + file,
|
||
|
|
resolveContext,
|
||
|
|
callback
|
||
|
|
);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
};
|