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'./VGrid.sass'\n\nimport Vue, { PropOptions } from 'vue'\nimport mergeData from '../../util/mergeData'\nimport { upperFirst } from '../../util/helpers'\n\n// no xs\nconst breakpoints = ['sm', 'md', 'lg', 'xl']\n\nconst ALIGNMENT = ['start', 'end', 'center']\n\nfunction makeProps (prefix: string, def: () => PropOptions) {\n  return breakpoints.reduce((props, val) => {\n    props[prefix + upperFirst(val)] = def()\n    return props\n  }, {} as Dictionary<PropOptions>)\n}\n\nconst alignValidator = (str: any) => [...ALIGNMENT, 'baseline', 'stretch'].includes(str)\nconst alignProps = makeProps('align', () => ({\n  type: String,\n  default: null,\n  validator: alignValidator,\n}))\n\nconst justifyValidator = (str: any) => [...ALIGNMENT, 'space-between', 'space-around'].includes(str)\nconst justifyProps = makeProps('justify', () => ({\n  type: String,\n  default: null,\n  validator: justifyValidator,\n}))\n\nconst alignContentValidator = (str: any) => [...ALIGNMENT, 'space-between', 'space-around', 'stretch'].includes(str)\nconst alignContentProps = makeProps('alignContent', () => ({\n  type: String,\n  default: null,\n  validator: alignContentValidator,\n}))\n\nconst propMap = {\n  align: Object.keys(alignProps),\n  justify: Object.keys(justifyProps),\n  alignContent: Object.keys(alignContentProps),\n}\n\nconst classMap = {\n  align: 'align',\n  justify: 'justify',\n  alignContent: 'align-content',\n}\n\nfunction breakpointClass (type: keyof typeof propMap, prop: string, val: string) {\n  let className = classMap[type]\n  if (val == null) {\n    return undefined\n  }\n  if (prop) {\n    // alignSm -> Sm\n    const breakpoint = prop.replace(type, '')\n    className += `-${breakpoint}`\n  }\n  // .align-items-sm-center\n  className += `-${val}`\n  return className.toLowerCase()\n}\n\nconst cache = new Map<string, any[]>()\n\nexport default Vue.extend({\n  name: 'v-row',\n  functional: true,\n  props: {\n    tag: {\n      type: String,\n      default: 'div',\n    },\n    dense: Boolean,\n    noGutters: Boolean,\n    align: {\n      type: String,\n      default: null,\n      validator: alignValidator,\n    },\n    ...alignProps,\n    justify: {\n      type: String,\n      default: null,\n      validator: justifyValidator,\n    },\n    ...justifyProps,\n    alignContent: {\n      type: String,\n      default: null,\n      validator: alignContentValidator,\n    },\n    ...alignContentProps,\n  },\n  render (h, { props, data, children }) {\n    // Super-fast memoization based on props, 5x faster than JSON.stringify\n    let cacheKey = ''\n    for (const prop in props) {\n      cacheKey += String((props as any)[prop])\n    }\n    let classList = cache.get(cacheKey)\n\n    if (!classList) {\n      classList = []\n      // Loop through `align`, `justify`, `alignContent` breakpoint props\n      let type: keyof typeof propMap\n      for (type in propMap) {\n        propMap[type].forEach(prop => {\n          const value: string = (props as any)[prop]\n          const className = breakpointClass(type, prop, value)\n          if (className) classList!.push(className)\n        })\n      }\n\n      classList.push({\n        'no-gutters': props.noGutters,\n        'row--dense': props.dense,\n        [`align-${props.align}`]: props.align,\n        [`justify-${props.justify}`]: props.justify,\n        [`align-content-${props.alignContent}`]: props.alignContent,\n      })\n\n      cache.set(cacheKey, classList)\n    }\n\n    return h(\n      props.tag,\n      mergeData(data, {\n        staticClass: 'row',\n        class: classList,\n      }),\n      children\n    )\n  },\n})\n"],"sourceRoot":""}