diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c2658d7 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +node_modules/ diff --git a/README.md b/README.md new file mode 100644 index 0000000..d1c5eea --- /dev/null +++ b/README.md @@ -0,0 +1,38 @@ +# lockstat + +and did you know there's only one company in the world that produces wooden +barrels? + +## whümf + +some statistics about your package-lock.json + +## wetch + +```shell +$ npm install -g lockstat +``` + +## commands + +### depcount + +print the number of version of each dependency in the tree + +#### usage + +```sh +$ lockstat depcount < package.json +``` + +#### options + +##### --file=\ +the package-lock.json to operate on. +you can use `-` or leave this blank to accept input on STDIN + +#### --min=\ +only print dependencies that have more than this number of versions. + +#### --sort=\ +how to sort the dependencies. `dont` is the default. diff --git a/commands/depcount.js b/commands/depcount.js new file mode 100644 index 0000000..e66292f --- /dev/null +++ b/commands/depcount.js @@ -0,0 +1,60 @@ +import {EOL} from "os" +import getLockfile from "../util/get-lockfile" +import recurseDependencies from "../util/recurse-dependencies" + +export let command = "depcount" +export let describe = "the number of versions of each dependency" +export let aliases = [ + "dependency-counts", + "dc" +] +export let builder = yargs => { + yargs + .option("min", { + describe: "show only dependencies that have more than 'min' numbers", + default: 0 + }) + .options("sort", { + default: "dont", + choices: ["dont", "count", "name"], + describe: "how to sort the dependencies" + }) + .options("show") + .check(argv => { + if (!(Number.isInteger(argv.min) && argv.min >= 0)) { + throw new Error("Error: `min` must be a non-negative integer") + } + + return true + }) +} + +let sorts = { + count: ([, a], [, b]) => b - a, + name: ([a, ], [b, ]) => a.localeCompare(b) +} + +export async function handler (argv) { + let lockfile = await getLockfile(argv) + + let counts = {} + let maxNameLength = 0 + + await recurseDependencies(async (name, info) => { + maxNameLength = name.length > maxNameLength + ? name.length + : maxNameLength + + counts[name] = (counts[name] || 0) + 1 + + }, lockfile.dependencies) + + Object.entries(counts) + .sort(sorts[argv.sort]) + .filter(([, count]) => count >= argv.min) + .forEach(([name, count]) => { + process.stdout.write( + name.padEnd(maxNameLength, " ") + "\t" + count + EOL + ) + }) +} diff --git a/esmboot.js b/esmboot.js new file mode 100755 index 0000000..499046b --- /dev/null +++ b/esmboot.js @@ -0,0 +1,3 @@ +#!/usr/bin/env node +require = require("esm")(module) +module.exports = require("./index.js") diff --git a/index.js b/index.js new file mode 100755 index 0000000..9df5aba --- /dev/null +++ b/index.js @@ -0,0 +1,12 @@ +#!/usr/bin/env node +let path = require("path") + +let commandDir = path.resolve(__dirname, "commands") + +let {argv} = require("yargs") + .option("file", { + describe: "the package-lock.json to operate on, use - or nothing for stdin" + }) + .commandDir(commandDir) + .demandCommand() + .epilogue("💖 🐕") diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..0705db1 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,433 @@ +{ + "name": "lockstat", + "version": "1.0.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "ansi-regex": { + "version": "3.0.0", + "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz", + "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=" + }, + "camelcase": { + "version": "5.0.0", + "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.0.0.tgz", + "integrity": "sha512-faqwZqnWxbxn+F1d399ygeamQNy3lPp/H9H6rNrqYh4FSVCtcY+3cub1MxA8o9mDd55mM8Aghuu/kuyYA6VTsA==" + }, + "cliui": { + "version": "4.1.0", + "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz", + "integrity": 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"^13.2.0" + } +} diff --git a/util/get-input.js b/util/get-input.js new file mode 100644 index 0000000..37f8f8e --- /dev/null +++ b/util/get-input.js @@ -0,0 +1,20 @@ +import {createReadStream} from "fs" +import path from "path" + +export default async function getInput ({file = "-"}) { + let stream = file == "-" + ? process.stdin + : createReadStream(path.resolve(file)) + + stream.resume() + stream.setEncoding("utf-8") + + let input = "" + + stream.on("data", chunk => input += chunk) + + return new Promise((keepPromise, breakPromise) => { + stream.on("end", () => keepPromise(input)) + stream.on("error", breakPromise) + }) +} diff --git a/util/get-lockfile.js b/util/get-lockfile.js new file mode 100644 index 0000000..1d245b1 --- /dev/null +++ b/util/get-lockfile.js @@ -0,0 +1,6 @@ +import getInput from "./get-input" +import parseLockfile from "./parse-lockfile" + +export default async function getLockfile ({file}) { + return parseLockfile(await getInput({file})) +} diff --git a/util/parse-lockfile.js b/util/parse-lockfile.js new file mode 100644 index 0000000..be37de7 --- /dev/null +++ b/util/parse-lockfile.js @@ -0,0 +1,26 @@ +import validateLockfile from "./validate-lockfile" + +let errors = { + parsing (error) { + console.error("Error parsing the input, make sure it's a json file!") + console.error("You can pass the file as STDIN or using the --file argument") + process.exit(2) + }, + invalid () { + console.error("Input doesn't appear to be a valid lockfile") + console.error("Make sure you've made it with a recent version of npm") + process.exit(3) + } +} + +let tryy = async fn => fn() + +export default async function parseLockfile (input) { + let lockfile = await tryy(() => JSON.parse(input)) + .catch(errors.parsing) + + await validateLockfile(lockfile) + .catch(errors.invalid) + + return lockfile +} diff --git a/util/recurse-dependencies.js b/util/recurse-dependencies.js new file mode 100644 index 0000000..8b5464c --- /dev/null +++ b/util/recurse-dependencies.js @@ -0,0 +1,11 @@ +export default async function recurseDependencies (fn, dependencies) { + for (let name in dependencies) { + let info = dependencies[name] + + await fn(name, info) + + if (info.dependencies) { + await recurseDependencies(fn, info.dependencies) + } + } +} diff --git a/util/validate-lockfile.js b/util/validate-lockfile.js new file mode 100644 index 0000000..3d95103 --- /dev/null +++ b/util/validate-lockfile.js @@ -0,0 +1,5 @@ +export default async function validateLockfile (lockfile) { + return lockfile.lockfileVersion === 1 && lockfile.requires === true + ? Promise.resolve() + : Promise.reject() +}