Method previous

lib/map-generator.js:283–302

()

  }

  previous() {
    if (!this.previousMaps) {
      this.previousMaps = []
      if (this.root) {
        this.root.walk(node => {
          if (node.source && node.source.input.map) {
            let map = node.source.input.map
            if (!this.previousMaps.includes(map)) {
              this.previousMaps.push(map)
            }
          }
        })
      } else {
        let input = new Input(this.originalCSS, this.opts)
        if (input.map) this.previousMaps.push(input.map)
      }
    }

    return this.previousMaps
  }

  setSourcesContent() {
    let already = {}