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658395e011
- Enables the `require-jsdoc` lint - Fixes all lint errors caused by enabling this lint. # Important Notes - There is no option to require JSDoc for other constructs, like top-level constants.
66 lines
1.8 KiB
TypeScript
66 lines
1.8 KiB
TypeScript
/** @file Shared utility functions. */
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import * as fs from 'node:fs'
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import * as path from 'node:path'
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import process from 'node:process'
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// =================
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// === Constants ===
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// =================
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/** Indent size for outputting JSON. */
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export const INDENT_SIZE = 4
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// ===================
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// === Environment ===
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// ===================
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/** Get the environment variable value.
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*
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* @param name - The name of the environment variable.
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* @returns The value of the environment variable.
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* @throws {Error} If the environment variable is not set. */
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export function requireEnv(name: string) {
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return (
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process.env[name] ??
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(() => {
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throw Error(`Missing ${name} environment variable.`)
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})()
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)
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}
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/** Read the path from environment variable and resolve it.
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*
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* @param name - The name of the environment variable.
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* @returns The resolved path.
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* @throws {Error} If the environment variable is not set. */
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export function requireEnvResolvedPath(name: string) {
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return path.resolve(requireEnv(name))
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}
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/** Read the path from environment variable and resolve it. Verify that it exists.
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*
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* @param name - The name of the environment variable.
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* @returns The resolved path.
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* @throws {Error} If the environment variable is not set or path does not exist. */
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export function requireEnvPathExist(name: string) {
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const value = requireEnv(name)
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if (fs.existsSync(value)) {
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return value
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} else {
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throw Error(`File with path ${value} read from environment variable ${name} is missing.`)
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}
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}
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// ======================
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// === String Helpers ===
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// ======================
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/** Get the common prefix of the two strings. */
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export function getCommonPrefix(a: string, b: string): string {
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let i = 0
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while (i < a.length && i < b.length && a[i] === b[i]) {
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i++
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}
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return a.slice(0, i)
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}
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