mirror of
https://github.com/react/react-native-devtools-frontend.git
synced 2026-09-28 13:13:37 +08:00
Nikolay Vitkov
d76576c6fe
This is need to be able to move to flat config which I am handling in a separate CL. The overrides are there as these packages got update today, so we need to way, but they were last touched 3 years ago, so reviewing their changes upstream as well. Bug: none Change-Id: I61534f881fd4e747c716b42b773f8f7f3e9bc761 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6063618 Commit-Queue: Nikolay Vitkov <nvitkov@chromium.org> Reviewed-by: Danil Somsikov <dsv@chromium.org>
48 lines
1.0 KiB
JavaScript
48 lines
1.0 KiB
JavaScript
'use strict';
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/** @const */
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var $Map = typeof Map === 'function' && Map.prototype ? Map : null;
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var $Set = typeof Set === 'function' && Set.prototype ? Set : null;
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var exported;
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if (!$Map) {
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/** @type {import('.')} */
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// eslint-disable-next-line no-unused-vars
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exported = function isMap(x) {
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// `Map` is not present in this environment.
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return false;
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};
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}
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var $mapHas = $Map ? Map.prototype.has : null;
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var $setHas = $Set ? Set.prototype.has : null;
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if (!exported && !$mapHas) {
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/** @type {import('.')} */
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// eslint-disable-next-line no-unused-vars
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exported = function isMap(x) {
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// `Map` does not have a `has` method
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return false;
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};
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}
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/** @type {import('.')} */
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module.exports = exported || function isMap(x) {
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if (!x || typeof x !== 'object') {
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return false;
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}
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try {
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$mapHas.call(x);
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if ($setHas) {
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try {
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$setHas.call(x);
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} catch (e) {
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return true;
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}
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}
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// @ts-expect-error TS can't figure out that $Map is always truthy here
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return x instanceof $Map; // core-js workaround, pre-v2.5.0
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} catch (e) {}
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return false;
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};
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