element-portable/src/utils/SnakedObject.ts
David Langley 491f0cd08a
Change license (#13)
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2024-09-09 13:57:16 +00:00

38 lines
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TypeScript

/*
Copyright 2024 New Vector Ltd.
Copyright 2022 The Matrix.org Foundation C.I.C.
SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/
export function snakeToCamel(s: string): string {
return s.replace(/._./g, (v) => `${v[0]}${v[2].toUpperCase()}`);
}
export class SnakedObject<T = Record<string, any>> {
private fallbackWarnings = new Set<string>();
public constructor(private obj: T) {}
public get<K extends string & keyof T>(key: K, altCaseName?: string): T[K] {
const val = this.obj[key];
if (val !== undefined) return val;
const fallbackKey = altCaseName ?? snakeToCamel(key);
const fallback = this.obj[<K>fallbackKey];
if (!!fallback && !this.fallbackWarnings.has(fallbackKey)) {
this.fallbackWarnings.add(fallbackKey);
console.warn(`Using deprecated camelCase config ${fallbackKey}`);
console.warn(
"See https://github.com/vector-im/element-web/blob/develop/docs/config.md#-deprecation-notice",
);
}
return fallback;
}
// Make JSON.stringify() pretend that everything is fine
public toJSON(): T {
return this.obj;
}
}