main.js

const core = require('@actions/core');
/* const github = require('@actions/github'); */
const exec = require('@actions/exec');
const writeGood = require('write-good');
const fs = require('fs');

const execute = async (command) => {
	let output = '';
	const options = {};
	options.listeners = {
		stdout: (data) => {
			output += data.toString();
		},
		stderr: (data) => {
			console.error(data);
		}
	};
	await exec.exec(command, null, options);
	return output;
};

const main = async () => {
	try {
		/* const workplace = process.env.GITHUB_WORKSPACE; */
		await execute('pwd');
		await execute('ls');
		const result = await execute("find -name \*.md");
		const files = result.split('\n');
		var isgood = true;
		for (const file of files){
			if (file === '') break;
			console.log(file);
			const text = fs.readFileSync(file, 'utf8');
			const suggest = writeGood(text);
			if (suggest.length >= 1) isgood = false;
			console.log(suggest);
		}
		if (!isgood){
			core.setFailed("Your writing is miserable.");
		}
	} catch (error) {
		core.setFailed(error.message);
	}
};
main();