90 lines
2.9 KiB
JavaScript
90 lines
2.9 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Some settings and code related to Mocha's handling of Node.js/V8 flags.
|
||
|
|
* @private
|
||
|
|
* @module
|
||
|
|
*/
|
||
|
|
|
||
|
|
const nodeFlags = require('node-environment-flags');
|
||
|
|
const unparse = require('yargs-unparser');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* These flags are considered "debug" flags.
|
||
|
|
* @see {@link impliesNoTimeouts}
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
const debugFlags = new Set(['inspect', 'inspect-brk']);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Mocha has historical support for various `node` and V8 flags which might not
|
||
|
|
* appear in `process.allowedNodeEnvironmentFlags`.
|
||
|
|
* These include:
|
||
|
|
* - `--preserve-symlinks`
|
||
|
|
* - `--harmony-*`
|
||
|
|
* - `--gc-global`
|
||
|
|
* - `--trace-*`
|
||
|
|
* - `--es-staging`
|
||
|
|
* - `--use-strict`
|
||
|
|
* - `--v8-*` (but *not* `--v8-options`)
|
||
|
|
* @summary Whether or not to pass a flag along to the `node` executable.
|
||
|
|
* @param {string} flag - Flag to test
|
||
|
|
* @param {boolean} [bareword=true] - If `false`, we expect `flag` to have one or two leading dashes.
|
||
|
|
* @returns {boolean} If the flag is considered a "Node" flag.
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
exports.isNodeFlag = (flag, bareword = true) => {
|
||
|
|
if (!bareword) {
|
||
|
|
// check if the flag begins with dashes; if not, not a node flag.
|
||
|
|
if (!/^--?/.test(flag)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// strip the leading dashes to match against subsequent checks
|
||
|
|
flag = flag.replace(/^--?/, '');
|
||
|
|
}
|
||
|
|
return (
|
||
|
|
// treat --require/-r as Mocha flag even though it's also a node flag
|
||
|
|
!(flag === 'require' || flag === 'r') &&
|
||
|
|
// check actual node flags from `process.allowedNodeEnvironmentFlags`,
|
||
|
|
// then historical support for various V8 and non-`NODE_OPTIONS` flags
|
||
|
|
// and also any V8 flags with `--v8-` prefix
|
||
|
|
(nodeFlags.has(flag) ||
|
||
|
|
debugFlags.has(flag) ||
|
||
|
|
/(?:preserve-symlinks(?:-main)?|harmony(?:[_-]|$)|(?:trace[_-].+$)|gc(?:[_-]global)?$|es[_-]staging$|use[_-]strict$|v8[_-](?!options).+?$)/.test(
|
||
|
|
flag
|
||
|
|
))
|
||
|
|
);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns `true` if the flag is a "debug-like" flag. These require timeouts
|
||
|
|
* to be suppressed, or pausing the debugger on breakpoints will cause test failures.
|
||
|
|
* @param {string} flag - Flag to test
|
||
|
|
* @returns {boolean}
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
exports.impliesNoTimeouts = flag => debugFlags.has(flag);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* All non-strictly-boolean arguments to node--those with values--must specify those values using `=`, e.g., `--inspect=0.0.0.0`.
|
||
|
|
* Unparse these arguments using `yargs-unparser` (which would result in `--inspect 0.0.0.0`), then supply `=` where we have values.
|
||
|
|
* Apparently --require in Node.js v8 does NOT want `=`.
|
||
|
|
* There's probably an easier or more robust way to do this; fixes welcome
|
||
|
|
* @param {Object} opts - Arguments object
|
||
|
|
* @returns {string[]} Unparsed arguments using `=` to specify values
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
exports.unparseNodeFlags = opts => {
|
||
|
|
var args = unparse(opts);
|
||
|
|
return args.length
|
||
|
|
? args
|
||
|
|
.join(' ')
|
||
|
|
.split(/\b/)
|
||
|
|
.map((arg, index, args) =>
|
||
|
|
arg === ' ' && args[index - 1] !== 'require' ? '=' : arg
|
||
|
|
)
|
||
|
|
.join('')
|
||
|
|
.split(' ')
|
||
|
|
: [];
|
||
|
|
};
|