webpack hangs at on “95% emit” / “95% emitting”

Question

This is my production webpack config. The two quotes in the title refer to webpack2 and webpack respectively. Both hang for me with a similar error.

This is my command t

Answer 1

This will also happen if you use indexTransform property and the function is throwing an error. To handle this you can wrap your function in a try/catch;

module.exports = (targetOptions, indexHtml) => {
  try {
    ...
  } catch (error) {
    console.error(error)
    process.exit(1) // Kills webpack
  }
}