You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
// Manually “tree shaken” from:
|
|
// <https://github.com/nodejs/node/blob/45f5c9b/lib/internal/modules/esm/utils.js>
|
|
// Last checked on: Nov 2, 2023.
|
|
|
|
import {codes} from './errors.js'
|
|
|
|
const {ERR_INVALID_ARG_VALUE} = codes
|
|
|
|
// In Node itself these values are populated from CLI arguments, before any
|
|
// user code runs.
|
|
// Here we just define the defaults.
|
|
const DEFAULT_CONDITIONS = Object.freeze(['node', 'import'])
|
|
const DEFAULT_CONDITIONS_SET = new Set(DEFAULT_CONDITIONS)
|
|
|
|
/**
|
|
* Returns the default conditions for ES module loading.
|
|
*/
|
|
function getDefaultConditions() {
|
|
return DEFAULT_CONDITIONS
|
|
}
|
|
|
|
/**
|
|
* Returns the default conditions for ES module loading, as a Set.
|
|
*/
|
|
function getDefaultConditionsSet() {
|
|
return DEFAULT_CONDITIONS_SET
|
|
}
|
|
|
|
/**
|
|
* @param {Array<string>} [conditions]
|
|
* @returns {Set<string>}
|
|
*/
|
|
export function getConditionsSet(conditions) {
|
|
if (conditions !== undefined && conditions !== getDefaultConditions()) {
|
|
if (!Array.isArray(conditions)) {
|
|
throw new ERR_INVALID_ARG_VALUE(
|
|
'conditions',
|
|
conditions,
|
|
'expected an array'
|
|
)
|
|
}
|
|
|
|
return new Set(conditions)
|
|
}
|
|
|
|
return getDefaultConditionsSet()
|
|
}
|