react-diff-view/esm/tokenize/normalizeToLines.js

A git diff component to consume the git unified diff output.

import { clone, leafOf, replace } from './utils';
function treeToPathList(node, output = [], path = []) {
    if (node.children) {
        const { children, ...nodeToUse } = node;
        path.push(nodeToUse);
        for (const child of children) {
            treeToPathList(child, output, path);
        }
        path.pop();
    }
    else {
        output.push(clone([...path.slice(1), node]));
    }
    return output;
}
function splitPathToLines(path) {
    const leaf = leafOf(path);
    if (!leaf.value.includes('\n')) {
        return [path];
    }
    const linesOfText = leaf.value.split('\n');
    return linesOfText.map(line => replace(path, { ...leaf, value: line }));
}
function splitByLineBreak(paths) {
    return paths.reduce((lines, path) => {
        const currentLine = lines[lines.length - 1];
        const [currentRemaining, ...nextLines] = splitPathToLines(path);
        return [
            ...lines.slice(0, -1),
            [...currentLine, currentRemaining],
            ...nextLines.map(path => [path]),
        ];
    }, [[]]);
}
export default function normalizeToLines(tree) {
    const paths = treeToPathList(tree);
    const linesOfPaths = splitByLineBreak(paths);
    return linesOfPaths;
}
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