Function runNextCommand

integration-tests/utils/next-test-utils.ts:319–396

(argv, options: RunNextCommandOptions = {})

//Next Utils

export function runNextCommand(argv, options: RunNextCommandOptions = {}) {
  const nextnextbin = getCommandBin("next", options.cwd)
  const nextBin = path.join(nextnextbin, "dist/bin/next")
  const cwd = options.cwd || process.cwd()
  // Let Next.js decide the environment
  const env = {
    ...process.env,
    NODE_ENV: "production" as const,
    __NEXT_TEST_MODE: "true",
    ...options.env,
  }

  return new Promise((resolve, reject) => {
    console.log(`Running command "next ${argv.join(" ")}"`)
    const instance = spawn("node", [nextBin, ...argv], {
      cwd,
      env,
      stdio: ["ignore", "pipe", "pipe"],
    })

    if (typeof options.instance === "function") {
      options.instance(instance)
    }

    let mergedStdio = ""

    let stderrOutput = ""
    if (options.stderr) {
      instance.stderr?.on("data", function (chunk) {
        mergedStdio += chunk
        stderrOutput += chunk

        if (options.stderr === "log") {
          console.log(chunk.toString())
        }
      })
    } else {
      instance.stderr?.on("data", function (chunk) {
        mergedStdio += chunk
      })
    }

    let stdoutOutput = ""
    if (options.stdout) {
      instance.stdout?.on("data", function (chunk) {
        mergedStdio += chunk
        stdoutOutput += chunk

        if (options.stdout === "log") {
          console.log(chunk.toString())
        }
      })
    } else {
      instance.stdout?.on("data", function (chunk) {
        mergedStdio += chunk
      })
    }