3e81809df4
The comment on the two different `--help` sections matched, though their logic if what was handled was slightly different. This adjusts the comments to clarify that difference. This is completely unrelated to function, but I noticed it while reviewing code and thought I'd PR the fix.
119 lines
3.6 KiB
JavaScript
Executable file
119 lines
3.6 KiB
JavaScript
Executable file
#!/usr/bin/env node
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import * as log from '../build/output/log'
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import arg from 'next/dist/compiled/arg/index.js'
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import { NON_STANDARD_NODE_ENV } from '../lib/constants'
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;['react', 'react-dom'].forEach((dependency) => {
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try {
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// When 'npm link' is used it checks the clone location. Not the project.
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require.resolve(dependency)
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} catch (err) {
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console.warn(
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`The module '${dependency}' was not found. Next.js requires that you include it in 'dependencies' of your 'package.json'. To add it, run 'npm install ${dependency}'`
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)
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}
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})
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const defaultCommand = 'dev'
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export type cliCommand = (argv?: string[]) => void
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const commands: { [command: string]: () => Promise<cliCommand> } = {
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build: async () => await import('../cli/next-build').then((i) => i.nextBuild),
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start: async () => await import('../cli/next-start').then((i) => i.nextStart),
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export: async () =>
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await import('../cli/next-export').then((i) => i.nextExport),
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dev: async () => await import('../cli/next-dev').then((i) => i.nextDev),
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telemetry: async () =>
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await import('../cli/next-telemetry').then((i) => i.nextTelemetry),
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}
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const args = arg(
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{
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// Types
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'--version': Boolean,
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'--help': Boolean,
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'--inspect': Boolean,
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// Aliases
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'-v': '--version',
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'-h': '--help',
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},
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{
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permissive: true,
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}
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)
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// Version is inlined into the file using taskr build pipeline
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if (args['--version']) {
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console.log(`Next.js v${process.env.__NEXT_VERSION}`)
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process.exit(0)
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}
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// Check if we are running `next <subcommand>` or `next`
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const foundCommand = Boolean(commands[args._[0]])
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// Makes sure the `next --help` case is covered
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// This help message is only showed for `next --help`
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// `next <subcommand> --help` falls through to be handled later
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if (!foundCommand && args['--help']) {
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console.log(`
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Usage
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$ next <command>
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Available commands
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${Object.keys(commands).join(', ')}
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Options
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--version, -v Version number
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--help, -h Displays this message
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For more information run a command with the --help flag
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$ next build --help
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`)
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process.exit(0)
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}
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const command = foundCommand ? args._[0] : defaultCommand
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const forwardedArgs = foundCommand ? args._.slice(1) : args._
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if (args['--inspect'])
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throw new Error(
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`--inspect flag is deprecated. Use env variable NODE_OPTIONS instead: NODE_OPTIONS='--inspect' next ${command}`
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)
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// Make sure the `next <subcommand> --help` case is covered
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if (args['--help']) {
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forwardedArgs.push('--help')
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}
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const defaultEnv = command === 'dev' ? 'development' : 'production'
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const standardEnv = ['production', 'development', 'test']
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if (process.env.NODE_ENV && !standardEnv.includes(process.env.NODE_ENV)) {
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log.warn(NON_STANDARD_NODE_ENV)
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}
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;(process.env as any).NODE_ENV = process.env.NODE_ENV || defaultEnv
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// this needs to come after we set the correct NODE_ENV or
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// else it might cause SSR to break
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const React = require('react')
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if (typeof React.Suspense === 'undefined') {
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throw new Error(
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`The version of React you are using is lower than the minimum required version needed for Next.js. Please upgrade "react" and "react-dom": "npm install react react-dom" https://err.sh/vercel/next.js/invalid-react-version`
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)
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}
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commands[command]().then((exec) => exec(forwardedArgs))
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if (command === 'dev') {
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const { CONFIG_FILE } = require('../next-server/lib/constants')
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const { watchFile } = require('fs')
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watchFile(`${process.cwd()}/${CONFIG_FILE}`, (cur: any, prev: any) => {
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if (cur.size > 0 || prev.size > 0) {
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console.log(
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`\n> Found a change in ${CONFIG_FILE}. Restart the server to see the changes in effect.`
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)
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}
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})
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}
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