103 lines
2.6 KiB
JavaScript
103 lines
2.6 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Responsible for loading / finding Mocha's "rc" files.
|
||
|
|
* This doesn't have anything to do with `mocha.opts`.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @module
|
||
|
|
*/
|
||
|
|
|
||
|
|
const fs = require('fs');
|
||
|
|
const path = require('path');
|
||
|
|
const debug = require('debug')('mocha:cli:config');
|
||
|
|
const findUp = require('find-up');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* These are the valid config files, in order of precedence;
|
||
|
|
* e.g., if `.mocharc.js` is present, then `.mocharc.yaml` and the rest
|
||
|
|
* will be ignored.
|
||
|
|
* The user should still be able to explicitly specify a file.
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
exports.CONFIG_FILES = [
|
||
|
|
'.mocharc.cjs',
|
||
|
|
'.mocharc.js',
|
||
|
|
'.mocharc.yaml',
|
||
|
|
'.mocharc.yml',
|
||
|
|
'.mocharc.jsonc',
|
||
|
|
'.mocharc.json'
|
||
|
|
];
|
||
|
|
|
||
|
|
const isModuleNotFoundError = err =>
|
||
|
|
err.code !== 'MODULE_NOT_FOUND' ||
|
||
|
|
err.message.indexOf('Cannot find module') !== -1;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Parsers for various config filetypes. Each accepts a filepath and
|
||
|
|
* returns an object (but could throw)
|
||
|
|
*/
|
||
|
|
const parsers = (exports.parsers = {
|
||
|
|
yaml: filepath =>
|
||
|
|
require('js-yaml').safeLoad(fs.readFileSync(filepath, 'utf8')),
|
||
|
|
js: filepath => {
|
||
|
|
const cwdFilepath = path.resolve(filepath);
|
||
|
|
try {
|
||
|
|
debug(`parsers: load using cwd-relative path: "${cwdFilepath}"`);
|
||
|
|
return require(cwdFilepath);
|
||
|
|
} catch (err) {
|
||
|
|
if (isModuleNotFoundError(err)) {
|
||
|
|
debug(`parsers: retry load as module-relative path: "${filepath}"`);
|
||
|
|
return require(filepath);
|
||
|
|
} else {
|
||
|
|
throw err; // rethrow
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
json: filepath =>
|
||
|
|
JSON.parse(
|
||
|
|
require('strip-json-comments')(fs.readFileSync(filepath, 'utf8'))
|
||
|
|
)
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Loads and parses, based on file extension, a config file.
|
||
|
|
* "JSON" files may have comments.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {string} filepath - Config file path to load
|
||
|
|
* @returns {Object} Parsed config object
|
||
|
|
*/
|
||
|
|
exports.loadConfig = filepath => {
|
||
|
|
let config = {};
|
||
|
|
debug(`loadConfig: "${filepath}"`);
|
||
|
|
|
||
|
|
const ext = path.extname(filepath);
|
||
|
|
try {
|
||
|
|
if (ext === '.yml' || ext === '.yaml') {
|
||
|
|
config = parsers.yaml(filepath);
|
||
|
|
} else if (ext === '.js' || ext === '.cjs') {
|
||
|
|
config = parsers.js(filepath);
|
||
|
|
} else {
|
||
|
|
config = parsers.json(filepath);
|
||
|
|
}
|
||
|
|
} catch (err) {
|
||
|
|
throw new Error(`failed to parse config "${filepath}": ${err}`);
|
||
|
|
}
|
||
|
|
return config;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Find ("find up") config file starting at `cwd`
|
||
|
|
*
|
||
|
|
* @param {string} [cwd] - Current working directory
|
||
|
|
* @returns {string|null} Filepath to config, if found
|
||
|
|
*/
|
||
|
|
exports.findConfig = (cwd = process.cwd()) => {
|
||
|
|
const filepath = findUp.sync(exports.CONFIG_FILES, {cwd});
|
||
|
|
if (filepath) {
|
||
|
|
debug(`findConfig: found "${filepath}"`);
|
||
|
|
}
|
||
|
|
return filepath;
|
||
|
|
};
|