Method addSource

src/Bundle.ts:65–105

* Adds the specified source to the bundle, which can either be a `MagicString` object directly, * or an options object that holds a magic string `content` property and optionally provides * a `filename` for the source within the bundle, as well as an optional `ignoreList` hint * (which defa

(source: MagicString | BundleSourceDescription)

   * (depending on user preferences).
   */
  addSource(source: MagicString | BundleSourceDescription): this {
    if (source instanceof MagicString) {
      return this.addSource({
        content: source,
        filename: source.filename,
        separator: this.separator,
      })
    }

    if (!isObject(source) || !source.content) {
      throw new Error(
        'bundle.addSource() takes an object with a `content` property, which should be an instance of MagicString, and an optional `filename`',
      )
    }

    ['filename', 'ignoreList', 'indentExclusionRanges', 'separator'].forEach((option) => {
      if (!hasOwnProp.call(source, option))
        source[option] = source.content[option]
    })

    if (source.separator === undefined) {
      // TODO there's a bunch of this sort of thing, needs cleaning up
      source.separator = this.separator
    }

    if (source.filename) {
      if (!hasOwnProp.call(this.uniqueSourceIndexByFilename, source.filename)) {
        this.uniqueSourceIndexByFilename[source.filename] = this.uniqueSources.length
        this.uniqueSources.push({ filename: source.filename, content: source.content.original })
      }
      else {
        const uniqueSource = this.uniqueSources[this.uniqueSourceIndexByFilename[source.filename]]
        if (source.content.original !== uniqueSource.content) {
          throw new Error(`Illegal source: same filename (${source.filename}), different contents`)
        }
      }
    }

    this.sources.push(source)
    return this
  }

  append(str: string, options?: BundleOptions): this {
    this.addSource({