File size: 1,188 Bytes
bc20498 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 |
// Manually “tree shaken” from:
// <https://github.com/nodejs/node/blob/81a9a97/lib/internal/modules/esm/utils.js>
// Last checked on: Apr 29, 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()
}
|