96 lines
2.7 KiB
TypeScript
96 lines
2.7 KiB
TypeScript
import { existsSync, readFileSync } from 'fs'
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import { readFile, writeFile as writeFileUnchecked } from 'fs/promises'
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import json5 from 'json5'
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import { dirname, join, relative } from 'path'
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import prettier from 'prettier'
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import { fileURLToPath } from 'url'
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import { nicelog } from './nicelog'
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const __filename = fileURLToPath(import.meta.url)
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const __dirname = dirname(__filename)
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export const REPO_ROOT = join(__dirname, '../..')
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const _rootPackageJsonPath = join(REPO_ROOT, 'package.json')
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if (!existsSync(_rootPackageJsonPath)) {
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throw new Error('expected to find package.json in REPO_ROOT')
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}
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const _rootPackageJson = JSON.parse(readFileSync(_rootPackageJsonPath, 'utf8'))
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if (_rootPackageJson['name'] !== '@tldraw/monorepo') {
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throw new Error('expected to find @tldraw/monorepo in REPO_ROOT package.json')
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}
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export async function readJsonIfExists(file: string) {
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const fileContents = await readFileIfExists(file)
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if (fileContents === null) {
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return null
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}
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return json5.parse(fileContents)
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}
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export async function readFileIfExists(file: string) {
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try {
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return await readFile(file, 'utf8')
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} catch {
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return null
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}
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}
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const prettierConfigPromise = prettier.resolveConfig(__dirname)
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export async function writeCodeFile(
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generator: string,
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language: 'typescript' | 'javascript',
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filePath: string,
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code: string
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) {
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const formattedCode = await prettier.format(
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`
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// This file is automatically generated by ${generator}.
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// Do not edit manually. Or do, I'm a comment, not a cop.
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${code}
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`,
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{
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...(await prettierConfigPromise),
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parser: language === 'typescript' ? 'typescript' : 'babel',
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}
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)
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await writeStringFile(filePath, formattedCode)
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}
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export async function writeStringFile(filePath: string, contents: string) {
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await writeFile(filePath, Buffer.from(contents, 'utf-8'))
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}
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export async function writeFile(filePath: string, contents: Buffer) {
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if (process.env.CI && !process.env.ALLOW_REFRESH_ASSETS_CHANGES) {
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let existingContents: Buffer | null = null
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try {
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existingContents = await readFile(filePath)
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} catch {
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// Ignore
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}
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if (existingContents && !existingContents.equals(contents)) {
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nicelog(
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`Asset file ${relative(
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REPO_ROOT,
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filePath
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)} has changed. Please run this script again and commit the changes.`
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)
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nicelog('Contents before:')
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nicelog(existingContents.toString('utf-8'))
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nicelog('\nContents after:')
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nicelog(contents.toString('utf-8'))
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process.exit(1)
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}
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}
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await writeFileUnchecked(filePath, contents, 'utf-8')
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}
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export async function writeJsonFile(filePath: string, contents: unknown) {
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const formattedJson = await prettier.format(JSON.stringify(contents, null, '\t'), {
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...(await prettierConfigPromise),
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parser: 'json',
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})
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await writeStringFile(filePath, formattedJson)
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}
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