npm-fzf/src/npmDependencies.js

Fuzzy search npm package with fzf

/**
 * List module's dependencies
 *
 */

// Dependencies
const chalk = require("chalk");
const spawn = require("child_process").spawn;
const { promisify } = require("es6-promisify");

// Default to node-fzf, the much less capable implementation of fzf, only when fzf is not installed.
// Using node-fzf will lose many features
const nfzf = promisify(require("node-fzf"));
const commandExists = promisify(require("command-exists"));

// Local dependencies
const { npmDependencies } = require("@hankchanocd/npmlist");

const npmList = () => {
	return {
		fzf() {
			commandExists("fzf")
				.then(ans => {
					if (ans) {
						return npmDependencies
							.npmList()
							.raw()
							.then(list => {
								let listStr = list.map(i => chalk.reset(i)).join("\n"); // Use reset to recover the corrupted colored string
								return spawn(
									`echo "${listStr}" |
								fzf --reverse --cycle --ansi --height=40%`,
									{
										stdio: "inherit",
										shell: true
									}
								);
							})
							.catch(err => console.log(chalk.redBright(err)));
					} else {
						return defaultNodeFzf();
					}
				})
				.catch(err => console.log(err));
		},

		fzfPreview() {
			commandExists("fzf")
				.then(ans => {
					if (ans) {
						return npmDependencies
							.npmList()
							.raw()
							.then(list => {
								let listStr = list.map(i => chalk.reset(i)).join("\n"); // Use reset to recover the corrupted colored string
								return spawn(
									`echo "${listStr}" |
								fzf --reverse --cycle --ansi \
	 								--preview-window=70% --preview=" [[ {} = 'Dependencies' ]] || [[ {} = 'DevDependencies' ]] || npm info {} "`,
									{
										stdio: "inherit",
										shell: true
									}
								);
							})
							.catch(err => console.log(chalk.redBright(err)));
					} else {
						return defaultNodeFzf();
					}
				})
				.catch(err => console.log(err));
		},

		print() {
			npmDependencies.npmList().default();
		}
	};
};

function defaultNodeFzf() {
	console.log(`Warning: The default node-fzf doesn't have preview option`);

	return npmDependencies
		.npmList()
		.raw()
		.then(list => {
			list.forEach(i => {
				if (i.includes("Dependencies") || i.includes("DevDependencies")) {
					list.splice(list.indexOf(i), 1);
				}
			});

			return nfzf(list);
		})
		.then(i => {
			const { selected, query } = i;
			if (!selected) {
				console.log("No matches for:", query);
			}
			console.log(selected.value);
			return;
		})
		.catch(err => console.log(chalk.redBright(err)));
}

const npmListDetails = () => {
	return npmDependencies.npmListDetails();
};

module.exports = {
	npmList,
	npmListDetails
};