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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/enhanced-resolve/lib/AliasPlugin.js
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Diffstat (limited to 'node_modules/enhanced-resolve/lib/AliasPlugin.js')
-rw-r--r--node_modules/enhanced-resolve/lib/AliasPlugin.js77
1 files changed, 77 insertions, 0 deletions
diff --git a/node_modules/enhanced-resolve/lib/AliasPlugin.js b/node_modules/enhanced-resolve/lib/AliasPlugin.js
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+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+*/
+"use strict";
+
+function startsWith(string, searchString) {
+ const stringLength = string.length;
+ const searchLength = searchString.length;
+
+ // early out if the search length is greater than the search string
+ if (searchLength > stringLength) {
+ return false;
+ }
+ let index = -1;
+ while (++index < searchLength) {
+ if (string.charCodeAt(index) !== searchString.charCodeAt(index)) {
+ return false;
+ }
+ }
+ return true;
+}
+
+module.exports = class AliasPlugin {
+ constructor(source, options, target) {
+ this.source = source;
+ this.options = Array.isArray(options) ? options : [options];
+ this.target = target;
+ }
+
+ apply(resolver) {
+ const target = resolver.ensureHook(this.target);
+ resolver
+ .getHook(this.source)
+ .tapAsync("AliasPlugin", (request, resolveContext, callback) => {
+ const innerRequest = request.request || request.path;
+ if (!innerRequest) return callback();
+ for (const item of this.options) {
+ if (
+ innerRequest === item.name ||
+ (!item.onlyModule && startsWith(innerRequest, item.name + "/"))
+ ) {
+ if (
+ innerRequest !== item.alias &&
+ !startsWith(innerRequest, item.alias + "/")
+ ) {
+ const newRequestStr =
+ item.alias + innerRequest.substr(item.name.length);
+ const obj = Object.assign({}, request, {
+ request: newRequestStr
+ });
+ return resolver.doResolve(
+ target,
+ obj,
+ "aliased with mapping '" +
+ item.name +
+ "': '" +
+ item.alias +
+ "' to '" +
+ newRequestStr +
+ "'",
+ 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);
+ }
+ );
+ }
+ }
+ }
+ return callback();
+ });
+ }
+};