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'./VGrid.sass'\n\nimport Vue, { VNode, 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 breakpointProps = (() => {\n  return breakpoints.reduce((props, val) => {\n    props[val] = {\n      type: [Boolean, String, Number],\n      default: false,\n    }\n    return props\n  }, {} as Dictionary<PropOptions>)\n})()\n\nconst offsetProps = (() => {\n  return breakpoints.reduce((props, val) => {\n    props['offset' + upperFirst(val)] = {\n      type: [String, Number],\n      default: null,\n    }\n    return props\n  }, {} as Dictionary<PropOptions>)\n})()\n\nconst orderProps = (() => {\n  return breakpoints.reduce((props, val) => {\n    props['order' + upperFirst(val)] = {\n      type: [String, Number],\n      default: null,\n    }\n    return props\n  }, {} as Dictionary<PropOptions>)\n})()\n\nconst propMap = {\n  col: Object.keys(breakpointProps),\n  offset: Object.keys(offsetProps),\n  order: Object.keys(orderProps),\n}\n\nfunction breakpointClass (type: keyof typeof propMap, prop: string, val: boolean | string | number) {\n  let className = type\n  if (val == null || val === false) {\n    return undefined\n  }\n  if (prop) {\n    const breakpoint = prop.replace(type, '')\n    className += `-${breakpoint}`\n  }\n  // Handling the boolean style prop when accepting [Boolean, String, Number]\n  // means Vue will not convert <v-col sm></v-col> to sm: true for us.\n  // Since the default is false, an empty string indicates the prop's presence.\n  if (type === 'col' && (val === '' || val === true)) {\n    // .col-md\n    return className.toLowerCase()\n  }\n  // .order-md-6\n  className += `-${val}`\n  return className.toLowerCase()\n}\n\nconst cache = new Map<string, any[]>()\n\nexport default Vue.extend({\n  name: 'v-col',\n  functional: true,\n  props: {\n    cols: {\n      type: [Boolean, String, Number],\n      default: false,\n    },\n    ...breakpointProps,\n    offset: {\n      type: [String, Number],\n      default: null,\n    },\n    ...offsetProps,\n    order: {\n      type: [String, Number],\n      default: null,\n    },\n    ...orderProps,\n    alignSelf: {\n      type: String,\n      default: null,\n      validator: (str: any) => ['auto', 'start', 'end', 'center', 'baseline', 'stretch'].includes(str),\n    },\n    tag: {\n      type: String,\n      default: 'div',\n    },\n  },\n  render (h, { props, data, children, parent }): VNode {\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 `col`, `offset`, `order` breakpoint props\n      let type: keyof typeof propMap\n      for (type in propMap) {\n        propMap[type].forEach(prop => {\n          const value: string | number | boolean = (props as any)[prop]\n          const className = breakpointClass(type, prop, value)\n          if (className) classList!.push(className)\n        })\n      }\n\n      const hasColClasses = classList.some(className => className.startsWith('col-'))\n\n      classList.push({\n        // Default to .col if no other col-{bp}-* classes generated nor `cols` specified.\n        col: !hasColClasses || !props.cols,\n        [`col-${props.cols}`]: props.cols,\n        [`offset-${props.offset}`]: props.offset,\n        [`order-${props.order}`]: props.order,\n        [`align-self-${props.alignSelf}`]: props.alignSelf,\n      })\n\n      cache.set(cacheKey, classList)\n    }\n\n    return h(props.tag, mergeData(data, { class: classList }), children)\n  },\n})\n"],"sourceRoot":"","file":"VCol.js"}