38 lines
975 B
JavaScript
38 lines
975 B
JavaScript
import { visit } from 'unist-util-visit'
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import { selectAll } from 'hast-util-select'
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import { parseSelector } from 'hast-util-parse-selector'
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/*
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* Attacher
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*/
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export default (options) => {
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const selector = options.selector || options.select || 'body'
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const wrapper = options.wrapper || options.wrap
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const rewrite = options.rewrite
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/*
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* Transformer
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*/
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return (tree) => {
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if (wrapper && typeof wrapper !== 'string') {
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throw new TypeError('Expected a `string` as wrapper')
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}
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if (typeof selector !== 'string') {
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throw new TypeError('Expected a `string` as selector')
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}
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for (const match of selectAll(selector, tree)) {
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visit(tree, match, (node, i, parent) => {
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const parsedWrapper = parseSelector(wrapper)
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if (rewrite) {
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parsedWrapper.children = node.children
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} else {
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parsedWrapper.children = [node]
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}
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parent.children[i] = parsedWrapper
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})
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}
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}
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}
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