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104 lines
2.8 KiB
104 lines
2.8 KiB
3 years ago
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Maël Nison @arcanis
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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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/**
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* @typedef {Object} PnpApiImpl
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* @property {function(string, string, object): string} resolveToUnqualified
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*/
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module.exports = class PnpPlugin {
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/**
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* @param {string | ResolveStepHook} source source
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* @param {PnpApiImpl} pnpApi pnpApi
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* @param {string | ResolveStepHook} target target
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*/
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constructor(source, pnpApi, target) {
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this.source = source;
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this.pnpApi = pnpApi;
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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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resolver
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.getHook(this.source)
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.tapAsync("PnpPlugin", (request, resolveContext, callback) => {
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const req = request.request;
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if (!req) return callback();
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// The trailing slash indicates to PnP that this value is a folder rather than a file
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const issuer = `${request.path}/`;
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const packageMatch = /^(@[^/]+\/)?[^/]+/.exec(req);
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if (!packageMatch) return callback();
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const packageName = packageMatch[0];
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const innerRequest = `.${req.slice(packageName.length)}`;
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let resolution;
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let apiResolution;
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try {
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resolution = this.pnpApi.resolveToUnqualified(packageName, issuer, {
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considerBuiltins: false
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});
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if (resolveContext.fileDependencies) {
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apiResolution = this.pnpApi.resolveToUnqualified("pnpapi", issuer, {
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considerBuiltins: false
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});
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}
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} catch (error) {
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if (
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error.code === "MODULE_NOT_FOUND" &&
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error.pnpCode === "UNDECLARED_DEPENDENCY"
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) {
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// This is not a PnP managed dependency.
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// Try to continue resolving with our alternatives
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if (resolveContext.log) {
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resolveContext.log(`request is not managed by the pnpapi`);
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for (const line of error.message.split("\n").filter(Boolean))
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resolveContext.log(` ${line}`);
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}
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return callback();
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}
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return callback(error);
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}
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if (resolution === packageName) return callback();
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if (apiResolution && resolveContext.fileDependencies) {
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resolveContext.fileDependencies.add(apiResolution);
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}
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const obj = {
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...request,
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path: resolution,
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request: innerRequest,
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ignoreSymlinks: true,
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fullySpecified: request.fullySpecified && innerRequest !== "."
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};
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resolver.doResolve(
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target,
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obj,
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`resolved by pnp to ${resolution}`,
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resolveContext,
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(err, result) => {
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if (err) return callback(err);
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if (result) return callback(null, result);
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// Skip alternatives
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return callback(null, null);
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}
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);
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});
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}
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};
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