54 lines
1.6 KiB
TypeScript
54 lines
1.6 KiB
TypeScript
import fs from "node:fs";
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import path from "node:path";
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export function isRecord(value: unknown): value is Record<string, unknown> {
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return typeof value === "object" && value !== null && !Array.isArray(value);
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}
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export function isNonEmptyString(value: unknown): value is string {
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return typeof value === "string" && value.trim().length > 0;
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}
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export function parseEnvValue(raw: string): string {
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const trimmed = raw.trim();
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if (
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(trimmed.startsWith('"') && trimmed.endsWith('"')) ||
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(trimmed.startsWith("'") && trimmed.endsWith("'"))
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) {
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return trimmed.slice(1, -1);
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}
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return trimmed;
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}
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export function normalizePositiveInt(value: unknown, fallback: number): number {
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if (typeof value === "number" && Number.isFinite(value)) {
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return Math.max(1, Math.floor(value));
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}
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return Math.max(1, Math.floor(fallback));
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}
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export function ensureDirForFile(filePath: string): void {
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fs.mkdirSync(path.dirname(filePath), { recursive: true, mode: 0o700 });
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}
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export function writeJsonFileSecure(pathname: string, value: unknown): void {
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ensureDirForFile(pathname);
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fs.writeFileSync(pathname, `${JSON.stringify(value, null, 2)}\n`, "utf8");
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fs.chmodSync(pathname, 0o600);
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}
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export function readTextFileIfExists(pathname: string): string | null {
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if (!fs.existsSync(pathname)) {
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return null;
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}
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return fs.readFileSync(pathname, "utf8");
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}
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export function writeTextFileAtomic(pathname: string, value: string, mode = 0o600): void {
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ensureDirForFile(pathname);
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const tempPath = `${pathname}.tmp-${process.pid}-${Date.now()}`;
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fs.writeFileSync(tempPath, value, "utf8");
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fs.chmodSync(tempPath, mode);
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fs.renameSync(tempPath, pathname);
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}
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