lepu-test-platform-web/node_modules/enhanced-resolve/lib/FileExistsPlugin.js

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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
function FileExistsPlugin(source, target) {
this.source = source;
this.target = target;
}
module.exports = FileExistsPlugin;
FileExistsPlugin.prototype.apply = function(resolver) {
var target = this.target;
resolver.plugin(this.source, function(request, callback) {
var fs = this.fileSystem;
var file = request.path;
fs.stat(file, function(err, stat) {
if(err || !stat) {
if(callback.missing) callback.missing.push(file);
if(callback.log) callback.log(file + " doesn't exist");
return callback();
}
if(!stat.isFile()) {
if(callback.missing) callback.missing.push(file);
if(callback.log) callback.log(file + " is not a file");
return callback();
}
this.doResolve(target, request, "existing file: " + file, callback, true);
}.bind(this));
});
};