helpers.ts — vue Source File

Source Code

import { emptyObject } from 'shared/util'
import { ASTElement, ASTModifiers } from 'types/compiler'
import { parseFilters } from './parser/filter-parser'

type Range = { start?: number; end?: number }

/* eslint-disable no-unused-vars */
export function baseWarn(msg: string, range?: Range) {
  console.error(`[Vue compiler]: ${msg}`)
}
/* eslint-enable no-unused-vars */

export function pluckModuleFunction<T, K extends keyof T>(
  modules: Array<T> | undefined,
  key: K
): Array<Exclude<T[K], undefined>> {
  return modules ? (modules.map(m => m[key]).filter(_ => _) as any) : []
}

export function addProp(
  el: ASTElement,
  name: string,
  value: string,
  range?: Range,
  dynamic?: boolean
) {
  ;(el.props || (el.props = [])).push(
    rangeSetItem({ name, value, dynamic }, range)
  )
  el.plain = false
}

export function addAttr(
  el: ASTElement,
  name: string,
  value: any,
  range?: Range,
  dynamic?: boolean
) {
  const attrs = dynamic
    ? el.dynamicAttrs || (el.dynamicAttrs = [])
    : el.attrs || (el.attrs = [])
  attrs.push(rangeSetItem({ name, value, dynamic }, range))
  el.plain = false
}

// add a raw attr (use this in preTransforms)
export function addRawAttr(
  el: ASTElement,
  name: string,
  value: any,
  range?: Range
) {
  el.attrsMap[name] = value
  el.attrsList.push(rangeSetItem({ name, value }, range))
}

export function addDirective(
  el: ASTElement,
  name: string,
// ... (184 more lines)