Marc Mintel
5397309103
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62 lines
1.6 KiB
Plaintext
62 lines
1.6 KiB
Plaintext
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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/** @typedef {import("./Resolver")} Resolver */
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/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
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module.exports = class FileExistsPlugin {
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/**
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* @param {string | ResolveStepHook} source source
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* @param {string | ResolveStepHook} target target
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*/
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constructor(source, target) {
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this.source = source;
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this.target = target;
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}
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/**
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* @param {Resolver} resolver the resolver
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* @returns {void}
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*/
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apply(resolver) {
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const target = resolver.ensureHook(this.target);
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const fs = resolver.fileSystem;
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resolver
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.getHook(this.source)
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.tapAsync("FileExistsPlugin", (request, resolveContext, callback) => {
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const file = request.path;
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if (!file) return callback();
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fs.stat(file, (err, stat) => {
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if (err || !stat) {
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if (resolveContext.missingDependencies) {
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resolveContext.missingDependencies.add(file);
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}
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if (resolveContext.log) resolveContext.log(`${file} doesn't exist`);
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return callback();
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}
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if (!stat.isFile()) {
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if (resolveContext.missingDependencies) {
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resolveContext.missingDependencies.add(file);
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}
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if (resolveContext.log) resolveContext.log(`${file} is not a file`);
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return callback();
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}
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if (resolveContext.fileDependencies) {
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resolveContext.fileDependencies.add(file);
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}
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resolver.doResolve(
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target,
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request,
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`existing file: ${file}`,
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resolveContext,
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callback,
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);
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});
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});
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}
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};
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