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58 lines
1.5 KiB
58 lines
1.5 KiB
/* |
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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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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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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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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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