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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | 2x 2x 2x 5x 5x 5x 5x 5x 2x 2x 2x 5x 7x 7x 3x 4x 7x 7x 3x 3x | import { isObject, toHandlerKey } from '@vue/shared'
import { warn } from '../warning'
/**
* For prefixing keys in v-on="obj" with "on"
* @private
*/
export function toHandlers(
obj: Record<string, any>,
preserveCaseIfNecessary?: boolean,
): Record<string, any> {
const ret: Record<string, any> = {}
if (__DEV__ && !isObject(obj)) {
warn(`v-on with no argument expects an object value.`)
return ret
}
for (const key in obj) {
ret[
preserveCaseIfNecessary && /[A-Z]/.test(key)
? `on:${key}`
: toHandlerKey(key)
] = obj[key]
}
return ret
}
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