johandalabacka

function readStdin () {
  return new Promise((resolve, reject) => {
    process.stdin.resume()
    process.stdin.setEncoding('utf8')
    let buffer = ''
    process.stdin.on('data', (chunk) => {
      buffer += chunk
    })
    process.stdin.on('error', (err) => {
      reject(err)

johandalabacka

/**
 *
 * @param {Response} response
 * @returns {any}
 */
async function _fetchBody (response) {
  const contentType = response.headers.get('content-type')
  if (contentType === 'application/json') {
    return await response.json()

johandalabacka

function fetchWithParams(resource, params, init) {
  const u = resource instanceof URL ? resource : new URL(resource)
  for([k,v] of Object.entries(params)) {
    u.searchParams.set(k, v)
  }
  return fetch(u, init)
}

johandalabacka

#!/usr/bin/env deno run --allow-run --allow-write

const p = Deno.run({
  cmd: ['deno', 'info', '--json'],
  stdout: 'piped',
  env: { NO_COLOR: "1" } // No color in output
})
const status = await p.status()
if (!status.success) {
  Deno.exit(status.code)

johandalabacka

import fs from 'fs/promises';

async function* lines(path) {
  const content = await fs.readFile(path, { encoding: 'utf-8' })
  const lines = content.split(/\n/)
  for (const line of lines) {
    yield line
  }
}

johandalabacka

function* range(start, end, step = 1) {
  if (start < end) {
    for (let i = start; i <= end; i += step) {
      yield i
    }
  } else {
    for (let i = start; i >= end; i -= step) {
      yield i
    }
  }

johandalabacka

/// Generate numbers from start to end.
/// If step is 0 will it return start indefinitly
Iterable<int> range(int start, int end, [int step = 1]) sync* {
  if (start > end && step > 0 || start > end && step < 0) {
    step = -step;
  }
  var i = start;
  while (i <= end) {
    yield i += step;
  }

johandalabacka

#!/bin/sh
# The offical build for linux doesn't work on Centos/RHEL 7
# The error is deno: /lib64/libc.so.6: version `GLIBC_2.18' not found (required by deno)
# The version on Centos/RHEL7 is GLIBC_2.17
#
# Inspiration from https://gist.github.com/nodakai/bc0c80381cd0b787d8a5c65a1771ef5f
# On a newly installed centos 7 machine (Machine needs at least 4Gb memory)

sudo yum install -y git gcc

johandalabacka

function objectDiff(o1, o2) {
    o = {}
    for(let [key, value] of Object.entries(o2)) {
        if (value !== o1[key] && o1[key] !== undefined) {
            o[key] = value
        }
    }
    return o

johandalabacka

function forInterval(func, count, delay) {
  let interval = setInterval(() => {
    if (count-- === 0) {
      clearInterval(interval);
    } else {
      func();
    }
  }, delay);
}