75 lines
2.1 KiB
TypeScript
75 lines
2.1 KiB
TypeScript
// Copyright 2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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/* eslint-disable guard-for-in */
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/* eslint-disable no-restricted-syntax */
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/* eslint-disable no-proto */
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/* eslint-disable @typescript-eslint/no-explicit-any */
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const arrayBuffer = new ArrayBuffer(0);
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const uint8Array = new Uint8Array();
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const StaticArrayBufferProto = (arrayBuffer as any).__proto__;
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const StaticUint8ArrayProto = (uint8Array as any).__proto__;
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// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
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function getString(thing: any): string {
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if (thing === Object(thing)) {
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if (thing.__proto__ === StaticUint8ArrayProto) {
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return String.fromCharCode.apply(null, thing);
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}
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if (thing.__proto__ === StaticArrayBufferProto) {
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return getString(new Uint8Array(thing));
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}
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}
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return thing;
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}
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function getStringable(thing: any): boolean {
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return (
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typeof thing === 'string' ||
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typeof thing === 'number' ||
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typeof thing === 'boolean' ||
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(thing === Object(thing) &&
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(thing.__proto__ === StaticArrayBufferProto ||
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thing.__proto__ === StaticUint8ArrayProto))
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);
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}
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function ensureStringed(thing: any): any {
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if (getStringable(thing)) {
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return getString(thing);
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}
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if (thing instanceof Array) {
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const res = [];
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for (let i = 0; i < thing.length; i += 1) {
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res[i] = ensureStringed(thing[i]);
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}
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return res;
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}
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if (thing === Object(thing)) {
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const res: any = {};
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for (const key in thing) {
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res[key] = ensureStringed(thing[key]);
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}
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return res;
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}
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if (thing == null) {
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return null;
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}
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throw new Error(`unsure of how to jsonify object of type ${typeof thing}`);
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}
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// Number formatting utils
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const utils = {
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getString,
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isNumberSane: (number: string): boolean =>
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number[0] === '+' && /^[0-9]+$/.test(number.substring(1)),
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// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
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jsonThing: (thing: unknown) => JSON.stringify(ensureStringed(thing)),
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unencodeNumber: (number: string): Array<string> => number.split('.'),
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};
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export default utils;
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