noman.md

create ".envrc" for nvm or nodebrew

Needs some packages

jq && direnv && (nvm || nodebrew)

Run

npx https://gist.github.com/hMatoba/f13f91813e66c1d11d4246902a7f05f7

package.json

{"name": "noman", "version": "0.0.1", "bin": "./set.js"}

set.js

#!/usr/bin/env node

const spawnSync = require('child_process').spawnSync;
const process = require('process');
const fs = require('fs');

const hasNvm = () => {
  const result =  spawnSync('nvm', ['--version']);
  return !!result.error;
};

const hasNodebrew = () => {
  const result =  spawnSync('nodebrew', ['help']);
  return !!result.error;
};

const contentNvmrc = `
nvmrc=~/.nvm/nvm.sh
source $nvmrc
NODE_VER=$(cat package.json | jq -r ".engines.node")
nvm use $NODE_VER
`;

const contentNodebrew = `
NODE_VER=$(cat package.json | jq -r ".engines.node")
nodebrew use $NODE_VER
`;

const pathEnvrc = './.envrc'
const existsEnvrc = () => {
  try {
    fs.statSync(pathEnvrc);
    return true;
  } catch (error) {
    if (error.code === 'ENOENT') {
      return false;
    } else {
      console.error(error);
      process.exit(1);
    }
  }
};

// processing -----------------------------------------------------------------
if (existsEnvrc()) {
  console.log('exists ".envrc".');
  process.exit(1);
}

if (hasNvm()) {
  fs.writeFileSync(pathEnvrc, contentNvmrc);
  console.log('execute "direnv allow && direnv reload"');
  process.exit();
}

if (hasNodebrew()) {
  fs.writeFileSync(pathEnvrc, contentNodebrew);
  console.log('execute "direnv allow && direnv reload"');
  process.exit();
}

console.error('install "nvm" or "nodebrew".');
process.exit(1);