NextRJ Utilities

import { exists, existsSync } from "https://deno.land/x/nextrj_utils@$VERSION/path.ts"
const pathExists = await exists("./foo/bar")
const pathExistsSync = existsSync("./foo/bar")
console.log(pathExists) // true or false
console.log(pathExistsSync) // true or false

import { assertStrictEquals } from "https://deno.land/std@0.224.0/testing/asserts.ts"
import { format } from "https://deno.land/x/nextrj_utils@$VERSION/string.ts"

assertStrictEquals(format("${a} / ${b}", { a: 50, b: 100 }), "50 / 100")

const f = (v: number): number => ++v
assertStrictEquals(format("${v}-${f(1)}", { v: 1, f }), "1-2")

import { assertStrictEquals } from "https://deno.land/std@0.224.0/testing/asserts.ts"
import { truncateFilename } from "https://deno.land/x/nextrj_utils@$VERSION/string.ts"

truncateFilename("123456789.zip", 10) // "12...9.zip"
// 🦄 is 2 column width
truncateFilename("1234567🦄.zip", 10) // "1...🦄.zip"

import { truncate } from "https://deno.land/x/nextrj_utils@$VERSION/string.ts"

const maxLen = 10
// defaults truncate by max-column-count for better match visable with.
console.log(truncate("=".repeat(1000), maxLen))
console.log(truncate("±".repeat(1000), maxLen))
console.log(truncate("★".repeat(1000), maxLen))
console.log(truncate("中".repeat(1000), maxLen))
console.log(truncate("🦄".repeat(1000), maxLen))
console.log(truncate("🦄".repeat(1000), maxLen))
console.log(truncate("=中±🦄±中=".repeat(1000), maxLen))

// they should all have the very similar visable width in the terminal:

import { assertStrictEquals } from "https://deno.land/std@0.224.0/testing/asserts.ts"
import { format } from "https://deno.land/x/nextrj_utils@$VERSION/duration.ts"

// mm:ss
assertStrictEquals(format(15), "00:15")
assertStrictEquals(format(2 * 60 + 15), "02:15")

// hh:mm:ss
assertStrictEquals(format(13 * 60 * 60 + 2 * 60 + 15), "13:02:15")
assertStrictEquals(format(24 * 60 * 60 + 2 * 60 + 15), "24:02:15")

import { Fetcher } from "https://deno.land/x/nextrj_utils@$VERSION/file.ts"

const fetcher = new Fetcher(
  "https://www.example.com/test.pdf",
  {
    to: "example-test.pdf",
    on: {
      start(total: number) {
        console.log(`start: total=${total}`)
      },
      received(received: number, total: number) {
        console.log(`received: received=${received}, total=${total}`)
      },
      end(success: boolean) {
        console.log(`end: success=${success}`)
      },
    },
  },
)
await fetcher.fetch()