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import { promises as fs } from 'fs'
import findUp from 'next/dist/compiled/find-up'
import JSON5 from 'next/dist/compiled/json5'
import * as path from 'path'
type PackageJsonDependencies = {
dependencies: Record<string, string>
devDependencies: Record<string, string>
}
let cachedDeps: Promise<PackageJsonDependencies>
export function getDependencies({
cwd,
}: {
cwd: string
}): Promise<PackageJsonDependencies> {
if (cachedDeps) {
return cachedDeps
}
return (cachedDeps = (async () => {
const configurationPath: string | undefined = await findUp('package.json', {
cwd,
})
if (!configurationPath) {
return { dependencies: {}, devDependencies: {} }
}
const content = await fs.readFile(configurationPath, 'utf-8')
const packageJson: any = JSON5.parse(content)
const { dependencies = {}, devDependencies = {} } = packageJson || {}
return { dependencies, devDependencies }
})())
}
export async function getPackageVersion({
cwd,
name,
}: {
cwd: string
name: string
}): Promise<string | null> {
const { dependencies, devDependencies } = await getDependencies({ cwd })
if (!(dependencies[name] || devDependencies[name])) {
return null
}
const cwd2 =
cwd.endsWith(path.posix.sep) || cwd.endsWith(path.win32.sep)
? cwd
: `${cwd}/`
try {
const targetPath = require.resolve(`${name}/package.json`, {
paths: [cwd2],
})
const targetContent = await fs.readFile(targetPath, 'utf-8')
return JSON5.parse(targetContent).version ?? null
} catch {
return null
}
}
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