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