mirror of https://github.com/markedjs/marked
39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
import { HtmlDiffer } from '@markedjs/html-differ';
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const htmlDiffer = new HtmlDiffer({
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ignoreSelfClosingSlash: true,
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ignoreComments: false
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});
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export const isEqual = htmlDiffer.isEqual.bind(htmlDiffer);
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export async function firstDiff(actual, expected, padding) {
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padding = padding || 30;
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const diffHtml = await htmlDiffer.diffHtml(actual, expected);
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const result = diffHtml.reduce((obj, diff) => {
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if (diff.added) {
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if (obj.firstIndex === null) {
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obj.firstIndex = obj.expected.length;
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}
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obj.expected += diff.value;
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} else if (diff.removed) {
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if (obj.firstIndex === null) {
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obj.firstIndex = obj.actual.length;
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}
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obj.actual += diff.value;
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} else {
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obj.actual += diff.value;
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obj.expected += diff.value;
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}
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return obj;
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}, {
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firstIndex: null,
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actual: '',
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expected: ''
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});
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return {
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actual: result.actual.substring(result.firstIndex - padding, result.firstIndex + padding),
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expected: result.expected.substring(result.firstIndex - padding, result.firstIndex + padding)
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};
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}
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