How to use the diffLines function from diff

Find comprehensive JavaScript diff.diffLines code examples handpicked from public code repositorys.

diff.diffLines is a function that compares two blocks of text and returns the differences between the lines in the form of an array.

your-function.cjs

GitHub: UmamiAppearance/rollup-plugin-your-function

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)));

console.log(colorette.gray("BEGIN >>>"));

if (fileMode) {
    const diff$1 = diff.diffLines(source, code);

    let message = "";
    
    diff$1.forEach((part) => {

+ 6 other calls in file

generator.cjs

GitHub: dargstack/dargstack_rgen

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} else {
  console.error('README.md file not found!')
  process.exit(1)
}

const difference = diff.diffLines(md + '\n', readme)

if (difference.length > 1) {
  console.error(
    'The README is not up-2-date!\n' +

+ 7 other calls in file

How does diff.diffLines work?

diff.diffLines() is a function provided by the diff module in Node.js, which compares two strings and returns an array of line-based differences in the form of an array of objects, where each object contains a value and a flag indicating whether the value is an addition, deletion, or unchanged from the original string. It uses the "line-mode" algorithm to find the differences between the strings.

test.js

GitHub: cuongnqph06515/node_modules

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logger.log(fileName + ":");
if (results.skipped) {
    logger.log(chalk_1.default.yellow(" Skipped, requires typescript " + results.requirement + "\n"));
}
else {
    var markupDiffResults = diff.diffLines(results.markupFromMarkup, results.markupFromLinter);
    var fixesDiffResults = diff.diffLines(results.fixesFromLinter, results.fixesFromMarkup);
    var didMarkupTestPass = !markupDiffResults.some(function (hunk) { return hunk.added === true || hunk.removed === true; });
    var didFixesTestPass = !fixesDiffResults.some(function (hunk) { return hunk.added === true || hunk.removed === true; });
    if (didMarkupTestPass && didFixesTestPass) {

+ 11 other calls in file

conflicter.js

GitHub: jeremyberg1/trytravel_capstone1

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    contents.toString(),
    this.diffOptions
  );
  modified = changes.some(change => change.value && change.value.trim() && (change.added || change.removed));
} else {
  changes = jsdiff.diffLines(
    actual.toString(),
    contents.toString(),
    this.diffOptions
  );

Ai Example

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const { diffLines } = require("diff");

const oldStr = "Lorem ipsum dolor sit amet.";
const newStr = "Lorem dolor amet.";

const diffs = diffLines(oldStr, newStr);

console.log(diffs);

This will output an array of Change objects, each containing information about the differences between the old and new string: yaml Copy code

adapter.js

GitHub: jeremyberg1/trytravel_capstone1

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 */
diff(actual, expected, changes) {
  if (Array.isArray(actual)) {
    changes = actual;
  }
  changes = changes || diff.diffLines(actual, expected);
  let message = changes.map(string => {
    if (string.added) {
      return this._colorLines('Added', string.value);
    }

index.js

GitHub: NeonWilderness/twoday

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 * @param {String} s2 new value
 * @returns {tDiffResult}
 */
evalDiff(h, s1, s2) {
  const header = `[${h}]`;
  const differ = diffLines(s1, s2);
  const itemChanged = differ.filter(part => part.added || part.removed).length;
  let text;

  if (itemChanged) {

js-sample.js

GitHub: Yourbunnywroty/bep

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try {
  assert.equal(existing, desired);
  return;
} catch (err) {
  var strDiff = diff.diffLines(existing, desired);
  var diffText = '';

  strDiff.forEach(function(part, i){
    var color = part.added ? 'green' : part.removed ? 'red' : 'grey';

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