51 lines
1.2 KiB
TypeScript
51 lines
1.2 KiB
TypeScript
|
import * as fs from 'fs/promises'
|
||
|
|
import json5 from 'json5'
|
||
|
|
import { NextApiRequest } from 'next'
|
||
|
|
|
||
|
|
export function header(req: NextApiRequest, name: keyof NextApiRequest['headers']): string {
|
||
|
|
const value = req.headers[name]
|
||
|
|
if (!value) {
|
||
|
|
throw new Error(`Missing header: ${name}`)
|
||
|
|
}
|
||
|
|
if (Array.isArray(value)) {
|
||
|
|
throw new Error(`Header ${name} has multiple values`)
|
||
|
|
}
|
||
|
|
return value
|
||
|
|
}
|
||
|
|
|
||
|
|
export function firstLine(str: string) {
|
||
|
|
return str.split('\n')[0]
|
||
|
|
}
|
||
|
|
|
||
|
|
export function sleepMs(ms: number) {
|
||
|
|
return new Promise((resolve) => setTimeout(resolve, ms))
|
||
|
|
}
|
||
|
|
|
||
|
|
export function camelCase(name: string) {
|
||
|
|
return name.replace(/[_-]([a-z0-9])/gi, (g) => g[1].toUpperCase())
|
||
|
|
}
|
||
|
|
|
||
|
|
export function capitalize(name: string) {
|
||
|
|
return name[0].toUpperCase() + name.slice(1)
|
||
|
|
}
|
||
|
|
|
||
|
|
export function elapsed(start: number) {
|
||
|
|
return `${((Date.now() - start) / 1000).toFixed(2)}s`
|
||
|
|
}
|
||
|
|
|
||
|
|
export async function readFileIfExists(file: string) {
|
||
|
|
try {
|
||
|
|
return await fs.readFile(file, 'utf8')
|
||
|
|
} catch {
|
||
|
|
return null
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
export async function readJsonIfExists(file: string) {
|
||
|
|
const fileContents = await readFileIfExists(file)
|
||
|
|
if (fileContents === null) {
|
||
|
|
return null
|
||
|
|
}
|
||
|
|
return json5.parse(fileContents)
|
||
|
|
}
|