Method replace

lib/hacks/gradient.js:373–392

* Change degrees for webkit prefix

(string, prefix)

   * Change degrees for webkit prefix
   */
  replace(string, prefix) {
    let ast = parser(string)
    for (let node of ast.nodes) {
      let gradientName = this.name // gradient name
      if (node.type === 'function' && node.value === gradientName) {
        node.nodes = this.newDirection(node.nodes)
        node.nodes = this.normalize(node.nodes, gradientName)
        if (prefix === '-webkit- old') {
          let changes = this.oldWebkit(node)
          if (!changes) {
            return false
          }
        } else {
          node.nodes = this.convertDirection(node.nodes)
          node.value = prefix + node.value
        }
      }
    }
    return ast.toString()
  }

  /**
   * Replace first token