feat(use-i18n): add unit (byte/bit) formatter (#265)

* feat(use-i18n): add unit (byte/bit) formatter

* fix: correct bit(s)-per-second output

* fix: remove console.log

* feat: add minimumFractionDigits

* docs: correct README

packages/use-i18n/README.md

@@ -159,3 +159,125 @@ const App = () => {
   )
 }
 ```
+
+### formatUnit
+
+This hook also exposes a `formatUnit` function which can be used to format bits/bytes until [ECMA-402 Unit Preferences](https://github.com/tc39/proposal-smart-unit-preferences) is standardised
+
+We follow the IEC standard (base 10) with SI units (kilo,mega,giga,...) [more info here](https://en.wikipedia.org/wiki/Binary_prefix)
+
+It accepts an `options` as second parameter:
+- `unit`: Manadatory (see below)
+- `maximumFractionDigits`: The maximum number of fraction digits to use
+- `minimumFractionDigits`: The minimum number of fraction digits to use
+- `short`: if it should output the short or long form of the unit (think `Kb` vs `kilobits`)
+
+
+```js
+import { useI18n } from '@scaleway/use-i18n'
+import { DateInput } from '@scaleway/ui'
+
+const App = () => {
+  const { formatUnit } = useI18n()
+
+  const units = [
+    formatUnit(12 { unit: 'kilobyte' }) // "12 KB" or "12 Ko" in fr an ro
+    formatUnit(10 ** 8 { unit: 'bytes-humanized' }) // "100 MB" or "100 Mo" in fr an ro
+    formatUnit(10 ** 8 { unit: 'bits-per-second-humanized' }) // "100Mbs"
+  ]
+
+  return (
+    <div>
+      {units}
+    </div>
+  )
+}
+```
+
+We currently support two different unit:
+- byte
+- bit
+
+With each some variants :
+- `(kilo|mega|giga|tera|peta|exa|zetta|yotta)(bit|byte)`: This is the bare unit
+  - `formatUnit(12, { unit: 'megabyte' })` => `"12 MB"` or `"12 Mo"` (in fr/ro)
+  - `formatUnit(12, { unit: 'kilobit' })` => `"12 Kb"`
+  - `formatUnit(12, { unit: 'gigabit' })` => `"12 Gb"`
+  - `formatUnit(12, { unit: 'byte' })` => `"12 B"` or `"12 o"` (in fr/ro)
+- `(byte|bit)s-humanized`: This is an automated unit which will print a human readable value
+  - `formatUnit(1234567, { unit: 'bytes-humanized' })` => `"1.23 MB"` or `"1.23 Mo"` (in fr/ro)
+- `(kilo|mega|giga|tera|peta|exa|zetta|yotta)(bit|byte)(byte|bit)-humanized`: This is also an automated unit which will print a human readable value but in the unit specified
+  - `formatUnit(123456789, { unit: 'gigabyte-humanized' })` => `"0.12 GB"` or `"0.12 Go"` (in fr/ro)
+  - `formatUnit(123456789, { unit: 'kilobyte-humanized' })` => `"123456.78 KB"` or `"123456.78 Ko"` (in fr/ro)
+
+There is also a compound variant which can only be used with bits:
+- `(kilo|mega|giga|tera|peta|exa|zetta|yotta)bit-per-second`
+  - `formatUnit(1.6, { unit: 'gigabit-per-second' })` => `1.6 Gbps`
+  - `formatUnit(1.6, { unit: 'bit-per-second' })` => `1.6 bps`
+- `bits-per-second-humanized`: Automated unit
+  - `formatUnit(123456789, { unit: 'bits-per-second-humanized' })` => `123.46 Mbps`
+- `(kilo|mega|giga|tera|peta|exa|zetta|yotta)bit-per-second-humanized`: Humandreadable value in the unit specified
+  - `formatUnit(123456789, { unit: 'gigabit-per-second-humanized' })` => `0.12 Gbps`
+  - `formatUnit(123456789, { unit: 'kilobit-per-second-humanized' })` => `123456.78 Kbps`
+
+
+Here is the full list of available units:
+```
+bits-humanized
+bits-per-second-humanized
+bit
+bit-per-second
+bit-humanized
+bit-per-second-humanized
+kilobit
+kilobit-per-second
+kilobit-humanized
+kilobit-per-second-humanized
+megabit
+megabit-per-second
+megabit-humanized
+megabit-per-second-humanized
+gigabit
+gigabit-per-second
+gigabit-humanized
+gigabit-per-second-humanized
+terabit
+terabit-per-second
+terabit-humanized
+terabit-per-second-humanized
+petabit
+petabit-per-second
+petabit-humanized
+petabit-per-second-humanized
+exabit
+exabit-per-second
+exabit-humanized
+exabit-per-second-humanized
+zettabit
+zettabit-per-second
+zettabit-humanized
+zettabit-per-second-humanized
+yottabit
+yottabit-per-second
+yottabit-humanized
+yottabit-per-second-humanized
+bytes-humanized
+byte
+byte-humanized
+kilobyte
+kilobyte-humanized
+megabyte
+megabyte-humanized
+gigabyte
+gigabyte-humanized
+terabyte
+terabyte-humanized
+petabyte
+petabyte-humanized
+exabyte
+exabyte-humanized
+zettabyte
+zettabyte-humanized
+yottabyte
+yottabyte-humanized
+```

packages/use-i18n/package.json

@@ -27,6 +27,7 @@
   "license": "MIT",
   "dependencies": {
     "date-fns": "^2.19.0",
+    "filesize": "^6.4.0",
     "intl-format-cache": "^4.3.1",
     "intl-messageformat": "^9.5.3",
     "intl-pluralrules": "^1.2.2",