49 lines
1.2 KiB
Plaintext
49 lines
1.2 KiB
Plaintext
import {toString} from 'nlcst-to-string'
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import {modifyChildren} from 'unist-util-modify-children'
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// Initial lowercase letter.
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import {lowerInitial} from '../expressions.js'
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// Merge a sentence into its previous sentence, when the sentence starts with a
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// lower case letter.
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export const mergeInitialLowerCaseLetterSentences = modifyChildren(function (
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child,
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index,
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parent
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) {
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const children = child.children
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if (children && children.length > 0 && index > 0) {
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let position = -1
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while (children[++position]) {
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const node = children[position]
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if (node.type === 'WordNode') {
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if (!lowerInitial.test(toString(node))) {
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return
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}
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const siblings = parent.children
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const previous = siblings[index - 1]
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previous.children = previous.children.concat(children)
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siblings.splice(index, 1)
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// Update position.
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if (previous.position && child.position) {
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previous.position.end = child.position.end
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}
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// Next, iterate over the node *now* at the current position.
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return index
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}
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if (node.type === 'SymbolNode' || node.type === 'PunctuationNode') {
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return
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}
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}
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}
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})
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