Function resolveTrigger

lib/utils/pluginParser.js:61–81

(cliArgs = {}, config = {}, defaults = {}, options = {})

 *                                          (default: fail, test, step, file, url)
 */
export function resolveTrigger(cliArgs = {}, config = {}, defaults = {}, options = {}) {
  const { name = 'plugin', validModes = ALL_MODES } = options
  const merged = { ...defaults, ...pickKnown(config), ...cliArgs }
  if (merged.line != null) merged.line = parseInt(merged.line, 10)

  const valid = new Set(validModes)
  if (!valid.has(merged.on)) {
    output.error(`${name}: unknown on="${merged.on}". Valid: ${validModes.join(', ')}`)
    return null
  }
  if (merged.on === 'file' && !merged.path) {
    output.error(`${name}:on=file requires path=. Example: -p ${name}:on=file:path=tests/foo.js`)
    return null
  }
  if (merged.on === 'url' && !merged.pattern) {
    output.error(`${name}:on=url requires pattern=. Example: -p ${name}:on=url:pattern=/users/*`)
    return null
  }

  return merged
}

function pickKnown(config) {
  const out = {}