| 1 | /* @flow */
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| 2 |
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| 3 | import { warn } from 'core/util/index'
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| 4 |
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| 5 | export * from './attrs'
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| 6 | export * from './class'
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| 7 | export * from './element'
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| 8 |
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| 9 | /**
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| 10 | * Query an element selector if it's not an element already.
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| 11 | */
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| 12 | export function query (el: string | Element): Element {
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| 13 | if (typeof el === 'string') {
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| 14 | const selected = document.querySelector(el)
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| 15 | if (!selected) {
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| 16 | process.env.NODE_ENV !== 'production' && warn(
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| 17 | 'Cannot find element: ' + el
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| 18 | )
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| 19 | return document.createElement('div')
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| 20 | }
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| 21 | return selected
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| 22 | } else {
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| 23 | return el
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| 24 | }
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| 25 | }
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