Class SourceMap

src/SourceMap.ts:81–133

const btoa = /* #__PURE__ */ getBtoa()

export default class SourceMap {
  declare version: number
  declare file: string | undefined
  declare sources: string[]
  declare sourcesContent: Array<string | null> | undefined
  declare names: string[]
  declare mappings: string
  declare x_google_ignoreList: number[] | undefined
  declare debugId: string | undefined
  declare rangeMappings: string | undefined

  constructor(properties: DecodedSourceMap) {
    this.version = 3
    this.file = properties.file
    this.sources = properties.sources
    this.sourcesContent = properties.sourcesContent
    this.names = properties.names
    this.mappings = encode(properties.mappings)
    if (typeof properties.x_google_ignoreList !== 'undefined') {
      this.x_google_ignoreList = properties.x_google_ignoreList
    }
    if (typeof properties.debugId !== 'undefined') {
      this.debugId = properties.debugId
    }
    if (typeof properties.rangeMappings !== 'undefined') {
      let shouldOutputRangeMapping = false
      for (const line of properties.rangeMappings) {
        if (line.length !== 0) {
          shouldOutputRangeMapping = true
          break
        }
      }
      if (shouldOutputRangeMapping) {
        this.rangeMappings = encodeRangeMappings(properties.rangeMappings)
      }
    }
  }

  /**
   * Returns the equivalent of `JSON.stringify(map)`
   */
  toString(): string {
    return JSON.stringify(this)
  }

  /**
   * Returns a DataURI containing the sourcemap. Useful for doing this sort of thing:
   * `generateMap(options?: SourceMapOptions): SourceMap;`
   */
  toUrl(): string {
    return `data:application/json;charset=utf-8;base64,${btoa(this.toString())}`
  }
}