34 lines
860 B
TypeScript
34 lines
860 B
TypeScript
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// Copyright 2024 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { join } from 'path';
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import { readFile } from 'fs/promises';
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import { DNSFallbackSchema } from '../ts/types/DNSFallback';
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import type { DNSFallbackType } from '../ts/types/DNSFallback';
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let cached: DNSFallbackType | undefined;
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export async function getDNSFallback(): Promise<DNSFallbackType> {
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if (cached != null) {
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return cached;
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}
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const configPath = join(__dirname, '..', 'build', 'dns-fallback.json');
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let str: string;
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try {
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str = await readFile(configPath, 'utf8');
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} catch (error) {
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console.error(
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'Warning: build/dns-fallback.json not build, run `yarn generate`'
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);
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cached = [];
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return cached;
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}
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const json = JSON.parse(str);
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const result = DNSFallbackSchema.parse(json);
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cached = result;
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return result;
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}
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