package.lib.root.js Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of postcss Show documentation

Tool for transforming styles with JS plugins

There is a newer version: 8.4.49

'use strict'

let Container = require('./container')

let LazyResult, Processor

class Root extends Container {
  constructor(defaults) {
    super(defaults)
    this.type = 'root'
    if (!this.nodes) this.nodes = []
  }

  normalize(child, sample, type) {
    let nodes = super.normalize(child)

    if (sample) {
      if (type === 'prepend') {
        if (this.nodes.length > 1) {
          sample.raws.before = this.nodes[1].raws.before
        } else {
          delete sample.raws.before
        }
      } else if (this.first !== sample) {
        for (let node of nodes) {
          node.raws.before = sample.raws.before
        }
      }
    }

    return nodes
  }

  removeChild(child, ignore) {
    let index = this.index(child)

    if (!ignore && index === 0 && this.nodes.length > 1) {
      this.nodes[1].raws.before = this.nodes[index].raws.before
    }

    return super.removeChild(child)
  }

  toResult(opts = {}) {
    let lazy = new LazyResult(new Processor(), this, opts)
    return lazy.stringify()
  }
}

Root.registerLazyResult = dependant => {
  LazyResult = dependant
}

Root.registerProcessor = dependant => {
  Processor = dependant
}

module.exports = Root
Root.default = Root

Container.registerRoot(Root)