81 lines
1.9 KiB
JavaScript
Vendored
81 lines
1.9 KiB
JavaScript
Vendored
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const DescriptionFileUtils = require("./DescriptionFileUtils");
|
|
|
|
/** @typedef {import("./Resolver")} Resolver */
|
|
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
|
|
|
|
const slashCode = "/".charCodeAt(0);
|
|
|
|
module.exports = class SelfReferencePlugin {
|
|
/**
|
|
* @param {string | ResolveStepHook} source source
|
|
* @param {string | string[]} fieldNamePath name path
|
|
* @param {string | ResolveStepHook} target target
|
|
*/
|
|
constructor(source, fieldNamePath, target) {
|
|
this.source = source;
|
|
this.target = target;
|
|
this.fieldName = fieldNamePath;
|
|
}
|
|
|
|
/**
|
|
* @param {Resolver} resolver the resolver
|
|
* @returns {void}
|
|
*/
|
|
apply(resolver) {
|
|
const target = resolver.ensureHook(this.target);
|
|
resolver
|
|
.getHook(this.source)
|
|
.tapAsync("SelfReferencePlugin", (request, resolveContext, callback) => {
|
|
if (!request.descriptionFilePath) return callback();
|
|
|
|
const req = request.request;
|
|
if (!req) return callback();
|
|
|
|
// Feature is only enabled when an exports field is present
|
|
const exportsField = DescriptionFileUtils.getField(
|
|
request.descriptionFileData,
|
|
this.fieldName
|
|
);
|
|
if (!exportsField) return callback();
|
|
|
|
const name = DescriptionFileUtils.getField(
|
|
request.descriptionFileData,
|
|
"name"
|
|
);
|
|
if (typeof name !== "string") return callback();
|
|
|
|
if (
|
|
req.startsWith(name) &&
|
|
(req.length === name.length ||
|
|
req.charCodeAt(name.length) === slashCode)
|
|
) {
|
|
const remainingRequest = `.${req.slice(name.length)}`;
|
|
|
|
const obj = {
|
|
...request,
|
|
request: remainingRequest,
|
|
path: /** @type {string} */ (request.descriptionFileRoot),
|
|
relativePath: "."
|
|
};
|
|
|
|
resolver.doResolve(
|
|
target,
|
|
obj,
|
|
"self reference",
|
|
resolveContext,
|
|
callback
|
|
);
|
|
} else {
|
|
return callback();
|
|
}
|
|
});
|
|
}
|
|
};
|