How to use the structuredPatch function from diff

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

diff.structuredPatch is a function in the diff library that generates a structured patch diff between two sets of data.

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tap((params) => {
  assert(contentFormated);
  assert(contentOld);
}),
() =>
  Diff.structuredPatch(
    `${filename}.old`,
    `${filename}.new`,
    contentOld,
    contentFormated,
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+ 3 other calls in file

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if (hasChange) {
  messages.unshift('\n' + chalk.blue(file.path))
  if (options.dry || options.print) {
    console.log(messages.join('') + '\n')
    const filename = path.relative(process.cwd(), file.path)
    const { hunks } = diff.structuredPatch(
      filename,
      filename,
      original,
      file.source
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+ 3 other calls in file

How does diff.structuredPatch work?

diff.structuredPatch is a function that takes in two sets of data, the original and modified data, and returns a unified diff (also called a patch) that describes the differences between the two sets of data in a structured format. The output can be used to apply the changes to the original data in order to get the modified data.

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    console.log(message);

}
    
else {
    const diff$1 = diff.structuredPatch("", "", source, code, "", "", {
        context: 0
    });
    
    for (const part of diff$1.hunks) {
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Ai Example

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const diff = require("diff");

const oldText = "This is the old text.";
const newText = "This is the new text.";

const patch = diff.createPatch("my-file.txt", oldText, newText);
const structuredPatch = diff.structuredPatch(
  "my-file.txt",
  "my-file.txt",
  patch
);
console.log(structuredPatch);

In this example, we first use diff.createPatch to generate a unified diff patch from the old and new text. We pass in the file name my-file.txt as the first argument to both createPatch and structuredPatch to indicate that the patch applies to that file. Then we pass the patch to diff.structuredPatch, which returns a structured patch object containing the same information as the unified diff patch, but in a more structured format. This makes it easier to analyze and apply the patch programmatically. The output of this example would be a structured patch object like this: javascript Copy code