46 lines
1.6 KiB
TypeScript
46 lines
1.6 KiB
TypeScript
/*
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Copyright 2022 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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export function snakeToCamel(s: string): string {
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return s.replace(/._./g, (v) => `${v[0]}${v[2].toUpperCase()}`);
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}
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export class SnakedObject<T = Record<string, any>> {
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private fallbackWarnings = new Set<string>();
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public constructor(private obj: T) {}
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public get<K extends string & keyof T>(key: K, altCaseName?: string): T[K] {
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const val = this.obj[key];
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if (val !== undefined) return val;
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const fallbackKey = altCaseName ?? snakeToCamel(key);
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const fallback = this.obj[<K>fallbackKey];
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if (!!fallback && !this.fallbackWarnings.has(fallbackKey)) {
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this.fallbackWarnings.add(fallbackKey);
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console.warn(`Using deprecated camelCase config ${fallbackKey}`);
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console.warn(
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"See https://github.com/vector-im/element-web/blob/develop/docs/config.md#-deprecation-notice",
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);
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}
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return fallback;
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}
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// Make JSON.stringify() pretend that everything is fine
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public toJSON(): T {
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return this.obj;
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}
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}
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