unjs / codeup

Automated codebase updater [POC]

codeup

Automated codebase updater.

Important

This project a proof of concept in the current state.

Why?

Manually applying a change across multiple repositotires can become tiresome.

Codeup exposes conventional utils and a CLI to make it easier to migrate code and apply changes automatically and programmatically.

Defining actions

You can define shared actions using codeup. See ./actions dir for some examples.

import { defineAction } from "codeup";

export default defineAction({
  meta: {
    name: "",
    description: "",
    date: "",
  },
  async filter({ utils, logger }) {},
  async apply({ utils, logger }) {},
});

Example:

import { defineAction } from "codeup";

export default defineAction({
  meta: {
    name: "eslint-flat",
    description: "Upgrade to eslint flat config with unjs preset",
    date: "2024-05-03",
  },
  async filter({ utils }) {
    // Only apply if legacy eslint config is found
    return (
      (await utils.existsWithAnyExt(".eslintrc")) &&
      !(await utils.existsWithAnyExt("eslint.config"))
    );
  },
  async apply({ utils }) {
    // Migrate to new eslint config
    const eslintRC = await utils.readJSON(".eslintrc");
    const eslintignore = (await utils.readLines(".eslintignore")) || [];
    await utils.write(
      "eslint.config.mjs",
      getConfigTemplate({
        rules: eslintRC?.rules || {},
        ignores: eslintignore.filter(
          (i) => !["", "node_modules", "dist", "coverage"].includes(i),
        ),
      }),
    );

    // Remove legacy eslint config files
    await utils.remove(".eslintrc");
    await utils.remove(".eslintignore");

    // Update package.json scripts
    await utils.updatePackageJSON((pkg) => {
      if (!pkg.scripts) {
        return;
      }
      for (const name in pkg.scripts) {
        if (pkg.scripts[name].includes("eslint")) {
          pkg.scripts[name] = pkg.scripts[name].replace(/--ext\s+\S+\s/, "");
        }
      }
    });

    // Ensure latest eslint and preset versions are installed
    await utils.addDevDependency([
      "eslint@^9.0.0",
      "eslint-config-unjs@^0.3.0",
    ]);

    // Run lint:fix script once
    await utils.runScript("lint:fix");
  },
});

function getConfigTemplate(opts: {
  rules: Record<string, unknown>;
  ignores: string[];
}) {
  return /* js */ `
import unjs from "eslint-config-unjs";

// https://github.com/unjs/eslint-config
export default unjs({
  ignores: ${JSON.stringify(opts.ignores || [], undefined, 2)},
  rules: ${JSON.stringify(opts.rules || {}, undefined, 2)},
});
`.trim();
}

Apply Actions

You can use codeup apply CLI to apply actions from a local directory or remote source (powered by unjs/giget).

By default actions order will be sorted by date and name.

# Run all actions from local dir
npx codeup apply --actions path/to/actions/dir

# Run actions from a github source
npx codeup apply --actions gh:unjs/codeup/actions/unjs

Utils

You can directly use codeup utils as a library use use them within actions context.

import { readJSON, runScript } from "codeup/utils";

File System

append(path, contents, opts?: { newLine? })

Append text to a file (with a newline by default)

exists(path, opts?: { withAnyExt? })

Checks if a file or directory exists in path

existsWithAnyExt(path)

Checks if a file or directory exists in path with any extension (input path should not contain extension)

findUp(name)

Try to find a file in the current working directory or any parent directories

read(path)

Try to read a text file and returns its contents

readLines(path)

Read a text file and return its contents as an array of lines

remove(path, opts?: { log? })

Try to remove a file or directory

resolve(path)

Resolves a path relative to the current working directory.

update(path, fn, opts?: { log? })

Read a file and update its contents

Returns the updated contents or the old one

write(path, contents, opts?: { skipIfExists?, log? })

Write text contents to a file

Json

readJSON(path)

Try to read a JSON file

updateJSON(path, updater)

Try to update a JSON file using an updater function and return updated JSON

writeJSON(path, json, opts?)

Write a JSON file

Package Json

addDependency(name, opts?)

Add a dependency to the project using detected package manager

addDevDependency(name, opts?)

Add a dev dependency to the project using detected package manager

readPackageJSON()

Try to read the closest package.json file

removeDependency(name, opts?)

Remove a dependency from the project using detected package manager

runScript(name)

Run a package.json script using detected package manager

updatePackageJSON()

Try to update the closest package.json file

Programmatic API

You can integrate codeup in your workflows using programmatic API instead of CLI.

import { applyActionsFrom } from "codeup";

applyAction(action, cwd)

Apply an action within context and working directory.

applyActionFromFile(path, workingDir)

Load and apply action from file.

applyActions(actions, cwd, opts?: { sort })

Apply multiple actions within context and working directory.

If opts.sort is true, actions will be sorted by date or name otherwise in the order they are provided.

applyActionsFrom(source, cwd)

Load and apply actions from a remote or local source.

applyActionsFromDir(actionsDir, cwd)

Load and apply actions from directory.

createContext(cwd, name?)

Create an action context from a working directory.

defineAction(action)

getActionName(action)

Get action name from action object.

loadActionFromFile(path)

Load action from file.

loadActionsFromDir(actionsDir)

Load actions from a directory.

runWithContext(context, fn)

Run a function within a context.

sortActions(actions)

Sort actions by date or name.

useContext()

Get the current action context or create a new one from the working directory.

Development

local development

• Clone this repository
• Install latest LTS version of Node.js
• Enable Corepack using corepack enable
• Install dependencies using pnpm install
• Enable stub mode using pnpm build --stub

License

Published under the MIT license. Made by @pi0 and community 💛

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🤖 auto updated with automd