Method buildErrorMessage

components/player/Sandbox.js:79–105

(e)

  }

  buildErrorMessage(e) {
    let message = `${e.name}: ${e.message}`
    let line = null

    // Safari
    if (e.line != null) {
      line = e.line

      // FF
    } else if (e.lineNumber != null) {
      line = e.lineNumber

    // Chrome
    } else if (e.stack) {
      const matched = e.stack.match(/<anonymous>:(\d+)/)
      if (matched) {
        line = parseInt(matched[1])
      }
    }

    if (typeof line === 'number') {
      line -= prefixLineCount
      message = `${message} (${line})`
    }

    return message
  }

  throwError(message) {
    parent.postMessage(JSON.stringify({