491f0cd08a
* Copyright headers 1 * Licence headers 2 * Copyright Headers 3 * Copyright Headers 4 * Copyright Headers 5 * Copyright Headers 6 * Copyright headers 7 * Add copyright headers for html and config file * Replace license files and update package.json * Update with CLA * lint
42 lines
1.3 KiB
TypeScript
42 lines
1.3 KiB
TypeScript
/*
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Copyright 2024 New Vector Ltd.
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Copyright 2020, 2021 The Matrix.org Foundation C.I.C.
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SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
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Please see LICENSE files in the repository root for full details.
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*/
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/**
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* Get the values for an enum.
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* @param e The enum.
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* @returns The enum values.
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*/
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export function getEnumValues(e: any): (string | number)[] {
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// String-based enums will simply be objects ({Key: "value"}), but number-based
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// enums will instead map themselves twice: in one direction for {Key: 12} and
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// the reverse for easy lookup, presumably ({12: Key}). In the reverse mapping,
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// the key is a string, not a number.
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//
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// For this reason, we try to determine what kind of enum we're dealing with.
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const keys = Object.keys(e);
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const values: (string | number)[] = [];
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for (const key of keys) {
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const value = e[key];
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if (Number.isFinite(value) || e[value.toString()] !== Number(key)) {
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values.push(value);
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}
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}
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return values;
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}
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/**
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* Determines if a given value is a valid value for the provided enum.
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* @param e The enum to check against.
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* @param val The value to search for.
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* @returns True if the enum contains the value.
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*/
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export function isEnumValue<T>(e: T, val: string | number): boolean {
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return getEnumValues(e).includes(val);
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}
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