17 lines
568 B
JavaScript
17 lines
568 B
JavaScript
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// Small JSON files written atomically: the gateway's whole state is files
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// under its root, so a backup is a copy of one folder.
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import fs from 'node:fs';
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import path from 'node:path';
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export function readJson(file, fallback) {
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try { return JSON.parse(fs.readFileSync(file, 'utf8')); } catch { return fallback; }
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}
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export function writeJson(file, value) {
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fs.mkdirSync(path.dirname(file), { recursive: true });
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const tmp = `${file}.${process.pid}.tmp`;
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fs.writeFileSync(tmp, JSON.stringify(value, null, 2), { mode: 0o600 });
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fs.renameSync(tmp, file);
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}
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