14 lines
498 B
TypeScript
14 lines
498 B
TypeScript
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/**
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* Check if the given value is *inter-element whitespace*.
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*
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* @param {unknown} thing
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* Thing to check (typically `Node` or `string`).
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* @returns {boolean}
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* Whether the `value` is inter-element whitespace (`boolean`): consisting of
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* zero or more of space, tab (`\t`), line feed (`\n`), carriage return
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* (`\r`), or form feed (`\f`).
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* If a node is passed it must be a `Text` node, whose `value` field is
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* checked.
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*/
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export function whitespace(thing: unknown): boolean
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