pi-test-data/tester/node_modules/fastify-warning/index.js

Manage test data for automation

'use strict'

const { format } = require('util')

function build () {
  const codes = {}
  const emitted = new Map()

  function create (name, code, message) {
    if (!name) throw new Error('Fastify warning name must not be empty')
    if (!code) throw new Error('Fastify warning code must not be empty')
    if (!message) throw new Error('Fastify warning message must not be empty')

    code = code.toUpperCase()

    if (codes[code] !== undefined) {
      throw new Error(`The code '${code}' already exist`)
    }

    function buildWarnOpts (a, b, c) {
      // more performant than spread (...) operator
      let formatted
      if (a && b && c) {
        formatted = format(message, a, b, c)
      } else if (a && b) {
        formatted = format(message, a, b)
      } else if (a) {
        formatted = format(message, a)
      } else {
        formatted = message
      }

      return {
        code,
        name,
        message: formatted
      }
    }

    emitted.set(code, false)
    codes[code] = buildWarnOpts

    return codes[code]
  }

  function emit (code, a, b, c) {
    if (codes[code] === undefined) throw new Error(`The code '${code}' does not exist`)
    if (emitted.get(code) === true) return
    emitted.set(code, true)

    const warning = codes[code](a, b, c)
    process.emitWarning(warning.message, warning.name, warning.code)
  }

  return {
    create,
    emit,
    emitted
  }
}

module.exports = build