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76 lines
2.8 KiB
76 lines
2.8 KiB
3 years ago
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"use strict";
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const assert = require("assert");
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function findModuleNotFound(err, name) {
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// Check the first line of the error message
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const msg = err.message.split("\n")[0];
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return msg && (
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// Check for "Cannot find module 'foo'"
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msg.includes(`'${name}'`)
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// Check for "Your application tried to access foo (a peer dependency) ..." (Yarn v2 PnP)
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// https://github.com/yarnpkg/berry/blob/e81dc0d29bb2f41818d9c5c1c74bab1406fb979b/packages/yarnpkg-pnp/sources/loader/makeApi.ts#L680
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|| msg.includes(` ${name} `)
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// Check for "Your application tried to access foo. While ..." (Yarn v2 PnP)
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// https://github.com/yarnpkg/berry/blob/e81dc0d29bb2f41818d9c5c1c74bab1406fb979b/packages/yarnpkg-pnp/sources/loader/makeApi.ts#L704
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|| msg.includes(` ${name}. `)
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// Check for "Your application tried to access foo, but ..." (Yarn v2 PnP)
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// https://github.com/yarnpkg/berry/blob/e81dc0d29bb2f41818d9c5c1c74bab1406fb979b/packages/yarnpkg-pnp/sources/loader/makeApi.ts#L718
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|| msg.includes(` ${name}, `)
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);
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}
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function _optionalRequire(callerRequire, resolve, path, message) {
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let opts;
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if (typeof message === "object") {
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opts = message;
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assert(
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!(opts.hasOwnProperty("notFound") && opts.hasOwnProperty("default")),
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"optionalRequire: options set with both `notFound` and `default`"
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);
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} else {
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opts = { message };
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}
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try {
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return resolve ? callerRequire.resolve(path) : callerRequire(path);
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} catch (e) {
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if (e.code !== "MODULE_NOT_FOUND" || !findModuleNotFound(e, path)) {
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// if the module we are requiring fail because it try to require a
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// module that's not found, then we have to report this as failed.
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if (typeof opts.fail === "function") {
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return opts.fail(e);
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}
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throw e;
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}
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if (opts.message) {
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const message = typeof opts.message === "string" ? `${opts.message} - ` : "";
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const r = resolve ? "resolved" : "found";
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optionalRequire.log(`${message}optional module not ${r}`, path);
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}
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if (typeof opts.notFound === "function") {
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return opts.notFound(e);
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}
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return opts.default;
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}
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}
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const tryRequire = (callerRequire, path, message) => _optionalRequire(callerRequire, false, path, message);
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const tryResolve = (callerRequire, path, message) => _optionalRequire(callerRequire, true, path, message);
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function optionalRequire(callerRequire) {
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const x = (path, message) => tryRequire(callerRequire, path, message);
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x.resolve = (path, message) => tryResolve(callerRequire, path, message);
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return x;
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}
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optionalRequire.try = tryRequire;
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optionalRequire.tryResolve = tryResolve;
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optionalRequire.resolve = tryResolve;
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optionalRequire.log = (message, path) => console.log(`Just FYI: ${message}; Path "${path}"`);
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module.exports = optionalRequire;
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