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import './VGrid.sass'
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2
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3
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import Vue, { PropOptions } from 'vue'
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4
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import mergeData from '../../util/mergeData'
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5
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import { upperFirst } from '../../util/helpers'
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6
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7
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// no xs
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8
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const breakpoints = ['sm', 'md', 'lg', 'xl']
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9
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const ALIGNMENT = ['start', 'end', 'center']
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11
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12
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function makeProps (prefix: string, def: () => PropOptions) {
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13
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return breakpoints.reduce((props, val) => {
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props[prefix + upperFirst(val)] = def()
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15
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return props
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16
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}, {} as Dictionary<PropOptions>)
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}
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const alignValidator = (str: any) => [...ALIGNMENT, 'baseline', 'stretch'].includes(str)
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const alignProps = makeProps('align', () => ({
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type: String,
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default: null,
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validator: alignValidator,
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}))
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const justifyValidator = (str: any) => [...ALIGNMENT, 'space-between', 'space-around'].includes(str)
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const justifyProps = makeProps('justify', () => ({
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type: String,
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default: null,
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validator: justifyValidator,
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}))
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const alignContentValidator = (str: any) => [...ALIGNMENT, 'space-between', 'space-around', 'stretch'].includes(str)
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const alignContentProps = makeProps('alignContent', () => ({
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type: String,
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default: null,
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validator: alignContentValidator,
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38
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}))
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39
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40
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const propMap = {
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41
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align: Object.keys(alignProps),
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42
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justify: Object.keys(justifyProps),
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43
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alignContent: Object.keys(alignContentProps),
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}
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45
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46
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const classMap = {
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align: 'align',
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justify: 'justify',
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49
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alignContent: 'align-content',
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50
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}
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51
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52
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0
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function breakpointClass (type: keyof typeof propMap, prop: string, val: string) {
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53
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0
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let className = classMap[type]
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54
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1
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if (val == null) {
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55
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return undefined
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56
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}
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57
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1
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if (prop) {
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58
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// alignSm -> Sm
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59
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const breakpoint = prop.replace(type, '')
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60
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0
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className += `-${breakpoint}`
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61
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}
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62
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// .align-items-sm-center
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63
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className += `-${val}`
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64
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0
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return className.toLowerCase()
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65
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}
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66
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67
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0
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const cache = new Map<string, any[]>()
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68
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69
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0
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export default Vue.extend({
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70
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name: 'v-row',
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71
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functional: true,
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72
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props: {
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73
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tag: {
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74
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type: String,
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75
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default: 'div',
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76
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},
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77
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dense: Boolean,
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78
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noGutters: Boolean,
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79
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align: {
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80
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type: String,
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81
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default: null,
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82
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validator: alignValidator,
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83
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},
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84
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...alignProps,
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85
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justify: {
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86
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type: String,
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87
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default: null,
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88
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validator: justifyValidator,
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89
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},
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90
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...justifyProps,
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91
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alignContent: {
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92
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type: String,
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93
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default: null,
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94
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validator: alignContentValidator,
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95
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},
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96
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...alignContentProps,
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97
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},
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98
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0
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render (h, { props, data, children }) {
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99
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// Super-fast memoization based on props, 5x faster than JSON.stringify
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100
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0
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let cacheKey = ''
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101
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0
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for (const prop in props) {
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102
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0
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cacheKey += String((props as any)[prop])
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103
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}
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104
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0
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let classList = cache.get(cacheKey)
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105
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106
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1
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if (!classList) {
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107
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0
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classList = []
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108
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// Loop through `align`, `justify`, `alignContent` breakpoint props
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109
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let type: keyof typeof propMap
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110
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0
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for (type in propMap) {
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111
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0
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propMap[type].forEach(prop => {
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112
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0
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const value: string = (props as any)[prop]
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113
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0
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const className = breakpointClass(type, prop, value)
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114
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1
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if (className) classList!.push(className)
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115
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})
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116
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}
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117
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118
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0
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classList.push({
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119
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'no-gutters': props.noGutters,
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120
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'row--dense': props.dense,
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121
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[`align-${props.align}`]: props.align,
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122
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[`justify-${props.justify}`]: props.justify,
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123
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[`align-content-${props.alignContent}`]: props.alignContent,
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124
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})
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125
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126
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0
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cache.set(cacheKey, classList)
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127
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}
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128
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129
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0
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return h(
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130
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props.tag,
|
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131
|
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mergeData(data, {
|
|
132
|
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staticClass: 'row',
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133
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|
class: classList,
|
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134
|
|
}),
|
|
135
|
|
children
|
|
136
|
|
)
|
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137
|
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},
|
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138
|
|
})
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mcdmaster