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/**
* Utility for resolving a module relative to another module
* @author Teddy Katz
*/
"use strict";
const Module = require("module");
const path = require("path");
// Polyfill Node's `Module.createRequire` if not present. We only support the case where the argument is a filepath, not a URL.
const createRequire = (
// Added in v12.2.0
Module.createRequire ||
// Added in v10.12.0, but deprecated in v12.2.0.
Module.createRequireFromPath ||
// Polyfill - This is not executed on the tests on node@>=10.
/* istanbul ignore next */
(filename => {
const mod = new Module(filename, null);
mod.filename = filename;
mod.paths = Module._nodeModulePaths(path.dirname(filename)); // eslint-disable-line no-underscore-dangle
mod._compile("module.exports = require;", filename); // eslint-disable-line no-underscore-dangle
return mod.exports;
})
);
module.exports = {
/**
* Resolves a Node module relative to another module
* @param {string} moduleName The name of a Node module, or a path to a Node module.
*
* @param {string} relativeToPath An absolute path indicating the module that `moduleName` should be resolved relative to. This must be
* a file rather than a directory, but the file need not actually exist.
* @returns {string} The absolute path that would result from calling `require.resolve(moduleName)` in a file located at `relativeToPath`
*/
resolve(moduleName, relativeToPath) {
try {
return createRequire(relativeToPath).resolve(moduleName);
} catch (error) {
if (
typeof error === "object" &&
error !== null &&
error.code === "MODULE_NOT_FOUND" &&
!error.requireStack &&
error.message.includes(moduleName)
) {
error.message += `\nRequire stack:\n- ${relativeToPath}`;
}
throw error;
}
}
};