| /** |
| * Utility for resolving a module relative to another module |
| * @author Teddy Katz |
| */ |
| |
| import Module from "module"; |
| |
| /* |
| * `Module.createRequire` is added in v12.2.0. It supports URL as well. |
| * We only support the case where the argument is a filepath, not a URL. |
| */ |
| const createRequire = Module.createRequire; |
| |
| /** |
| * 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` |
| */ |
| function resolve(moduleName, relativeToPath) { |
| try { |
| return createRequire(relativeToPath).resolve(moduleName); |
| } catch (error) { |
| |
| // This `if` block is for older Node.js than 12.0.0. We can remove this block in the future. |
| 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; |
| } |
| } |
| |
| export { |
| resolve |
| }; |