53 lines
1.9 KiB
JavaScript
53 lines
1.9 KiB
JavaScript
|
/*
|
||
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
||
|
|
Author Tobias Koppers @sokra
|
||
|
|
*/
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
const DescriptionFileUtils = require("./DescriptionFileUtils");
|
||
|
|
const getInnerRequest = require("./getInnerRequest");
|
||
|
|
|
||
|
|
module.exports = class AliasFieldPlugin {
|
||
|
|
constructor(source, field, target) {
|
||
|
|
this.source = source;
|
||
|
|
this.field = field;
|
||
|
|
this.target = target;
|
||
|
|
}
|
||
|
|
|
||
|
|
apply(resolver) {
|
||
|
|
const target = resolver.ensureHook(this.target);
|
||
|
|
resolver.getHook(this.source).tapAsync("AliasFieldPlugin", (request, resolveContext, callback) => {
|
||
|
|
if(!request.descriptionFileData) return callback();
|
||
|
|
const innerRequest = getInnerRequest(resolver, request);
|
||
|
|
if(!innerRequest) return callback();
|
||
|
|
const fieldData = DescriptionFileUtils.getField(request.descriptionFileData, this.field);
|
||
|
|
if(typeof fieldData !== "object") {
|
||
|
|
if(resolveContext.log) resolveContext.log("Field '" + this.field + "' doesn't contain a valid alias configuration");
|
||
|
|
return callback();
|
||
|
|
}
|
||
|
|
const data1 = fieldData[innerRequest];
|
||
|
|
const data2 = fieldData[innerRequest.replace(/^\.\//, "")];
|
||
|
|
const data = typeof data1 !== "undefined" ? data1 : data2;
|
||
|
|
if(data === innerRequest) return callback();
|
||
|
|
if(data === undefined) return callback();
|
||
|
|
if(data === false) {
|
||
|
|
const ignoreObj = Object.assign({}, request, {
|
||
|
|
path: false
|
||
|
|
});
|
||
|
|
return callback(null, ignoreObj);
|
||
|
|
}
|
||
|
|
const obj = Object.assign({}, request, {
|
||
|
|
path: request.descriptionFileRoot,
|
||
|
|
request: data
|
||
|
|
});
|
||
|
|
resolver.doResolve(target, obj, "aliased from description file " + request.descriptionFilePath + " with mapping '" + innerRequest + "' to '" + data + "'", resolveContext, (err, result) => {
|
||
|
|
if(err) return callback(err);
|
||
|
|
|
||
|
|
// Don't allow other aliasing or raw request
|
||
|
|
if(result === undefined) return callback(null, null);
|
||
|
|
callback(null, result);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
};
|