SgtPooki/dependents-change.js

## dependents-change.js
#!/usr/bin/env node
/**
 * This script requires a markdown table for input, as generated by https://github.com/nvuillam/github-dependents-info
 * It compares the current table with the previous one and outputs a new table with the changes in stars.
 * Usage:
 *  github-dependents-info --repo ipfs/helia --markdownfile ./package-usage-2023-09.md --sort stars --verbose -x 2 -p
 *  // manually copy the Repostory and Stars table to `current.md`
 *  // manually copy the Repostory and Stars table from the previous month to `previous.md`
 *  node dependents-change.js
 *
 * This is used to generate the table in Helia reports, like at https://pl-strflt.notion.site/Helia-Report-2023-09-892d8510e49549b6b96fd87323c0c715#2b2d82cd734e45fab4c6b6549cb06e2c
 */
import fs from 'node:fs'

// read the previous table from `previous.md`
const previousMonthTable = fs.readFileSync('previous.md', 'utf8');
const currentMonthTable = fs.readFileSync('current.md', 'utf8');

// Function to parse a Markdown table and create an object
function parseMarkdownTable(table) {
  const lines = table.trim().split('\n');
  const header = lines[1].split('|').map(cell => cell.trim()).filter(Boolean);
  const data = {};

  for (let i = 2; i < lines.length; i++) {
    const row = lines[i].split('|').map(cell => cell.trim()).filter(Boolean);
    if (row.length === header.length) {
      data[row[0].toLowerCase()] = parseInt(row[1].toLowerCase());
    }
  }
  // make sure all keys are github urls only so we can compare them correctly.
  // i.e. convert from something like `[linkName](url)` to just `url`
  for (const key in data) {
    const match = key.match(/\[.*\]\((.*)\)/);
    if (match) {
      data[match[1]] = data[key];
      delete data[key];
    }
  }

  return data;
}

// Parse the tables and create objects
const previousMonthData = parseMarkdownTable(previousMonthTable);
const currentMonthData = parseMarkdownTable(currentMonthTable);

// Find new repositories and changes in stars
const changesInStars = {};

for (const repository in previousMonthData) {
  if (repository in currentMonthData) {
    const starChange = currentMonthData[repository] - previousMonthData[repository];
    changesInStars[repository] = starChange;
  }
}

// Prepare and log the result in Markdown format with clickable links
console.log('| Repository | Stars | Change |');
console.log('| --- | --- | --- |');

for (const repository in currentMonthData) {
  const starsCurrent = currentMonthData[repository];
  const change = changesInStars[repository] ?? 'NEW';
  const repoName = repository.replace('https://github.com/', '').replace('/', '/');
  const repoLink = `[${repoName}](${repository})`;
  console.log(`| ${repoLink} | ${starsCurrent} | ${change} |`);
}

## package.json
{
  "name": "@SgtPooki/dependents-change",
  "version": "1.0.1",
  "bin": "./dependents-change.js",
  "type": "module"
}
	#!/usr/bin/env node
	/**
	* This script requires a markdown table for input, as generated by https://github.com/nvuillam/github-dependents-info
	* It compares the current table with the previous one and outputs a new table with the changes in stars.
	* Usage:
	* github-dependents-info --repo ipfs/helia --markdownfile ./package-usage-2023-09.md --sort stars --verbose -x 2 -p
	* // manually copy the Repostory and Stars table to `current.md`
	* // manually copy the Repostory and Stars table from the previous month to `previous.md`
	* node dependents-change.js
	*
	* This is used to generate the table in Helia reports, like at https://pl-strflt.notion.site/Helia-Report-2023-09-892d8510e49549b6b96fd87323c0c715#2b2d82cd734e45fab4c6b6549cb06e2c
	*/
	import fs from 'node:fs'

	// read the previous table from `previous.md`
	const previousMonthTable = fs.readFileSync('previous.md', 'utf8');
	const currentMonthTable = fs.readFileSync('current.md', 'utf8');

	// Function to parse a Markdown table and create an object
	function parseMarkdownTable(table) {
	const lines = table.trim().split('\n');
	const header = lines[1].split('\|').map(cell => cell.trim()).filter(Boolean);
	const data = {};

	for (let i = 2; i < lines.length; i++) {
	const row = lines[i].split('\|').map(cell => cell.trim()).filter(Boolean);
	if (row.length === header.length) {
	data[row[0].toLowerCase()] = parseInt(row[1].toLowerCase());
	}
	}
	// make sure all keys are github urls only so we can compare them correctly.
	// i.e. convert from something like `[linkName](url)` to just `url`
	for (const key in data) {
	const match = key.match(/\[.\]\((.)\)/);
	if (match) {
	data[match[1]] = data[key];
	delete data[key];
	}
	}

	return data;
	}

	// Parse the tables and create objects
	const previousMonthData = parseMarkdownTable(previousMonthTable);
	const currentMonthData = parseMarkdownTable(currentMonthTable);

	// Find new repositories and changes in stars
	const changesInStars = {};

	for (const repository in previousMonthData) {
	if (repository in currentMonthData) {
	const starChange = currentMonthData[repository] - previousMonthData[repository];
	changesInStars[repository] = starChange;
	}
	}

	// Prepare and log the result in Markdown format with clickable links
	console.log('\| Repository \| Stars \| Change \|');
	console.log('\| --- \| --- \| --- \|');

	for (const repository in currentMonthData) {
	const starsCurrent = currentMonthData[repository];
	const change = changesInStars[repository] ?? 'NEW';
	const repoName = repository.replace('https://github.com/', '').replace('/', '/');
	const repoLink = `[${repoName}](${repository})`;
	console.log(`\| ${repoLink} \| ${starsCurrent} \| ${change} \|`);
	}
	{
	"name": "@SgtPooki/dependents-change",
	"version": "1.0.1",
	"bin": "./dependents-change.js",
	"type": "module"
	}