35 lines
1.3 KiB
JavaScript
35 lines
1.3 KiB
JavaScript
Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
|
const _nullishCoalesce = require('./_nullishCoalesce.js');
|
|
|
|
// https://github.com/alangpierce/sucrase/tree/265887868966917f3b924ce38dfad01fbab1329f
|
|
|
|
/**
|
|
* Polyfill for the nullish coalescing operator (`??`), when used in situations where at least one of the values is the
|
|
* result of an async operation.
|
|
*
|
|
* Note that the RHS is wrapped in a function so that if it's a computed value, that evaluation won't happen unless the
|
|
* LHS evaluates to a nullish value, to mimic the operator's short-circuiting behavior.
|
|
*
|
|
* Adapted from Sucrase (https://github.com/alangpierce/sucrase)
|
|
*
|
|
* @param lhs The value of the expression to the left of the `??`
|
|
* @param rhsFn A function returning the value of the expression to the right of the `??`
|
|
* @returns The LHS value, unless it's `null` or `undefined`, in which case, the RHS value
|
|
*/
|
|
async function _asyncNullishCoalesce(lhs, rhsFn) {
|
|
return _nullishCoalesce._nullishCoalesce(lhs, rhsFn);
|
|
}
|
|
|
|
// Sucrase version:
|
|
// async function _asyncNullishCoalesce(lhs, rhsFn) {
|
|
// if (lhs != null) {
|
|
// return lhs;
|
|
// } else {
|
|
// return await rhsFn();
|
|
// }
|
|
// }
|
|
|
|
exports._asyncNullishCoalesce = _asyncNullishCoalesce;
|
|
//# sourceMappingURL=_asyncNullishCoalesce.js.map
|