Add Prettier as formatter & apply its code style (#591)

* chore: Add & configure Prettier

* style: Apply Prettier styling

Author: eemeli

.eslintrc.yaml

@@ -11,6 +11,7 @@ overrides:
   - files: ["*/src/*.js"]
     extends:
       - ./eslint-base.yaml
+      - prettier
 
   - files: ["*/src/*.ts"]
     parser: "@typescript-eslint/parser"
@@ -21,6 +22,7 @@ overrides:
       - ./eslint-base.yaml
       - plugin:@typescript-eslint/recommended
       - plugin:@typescript-eslint/recommended-requiring-type-checking
+      - prettier
     rules:
       complexity: off
       prefer-const: off

.prettierignore

@@ -0,0 +1,13 @@
+node_modules
+html
+.*
+
+coverage/
+dist/
+esm/
+/fluent-*/index.js
+/tools/**/*.ftl
+/tools/**/*.json
+
+fixtures/
+fixtures_*/

CODE_OF_CONDUCT.md

@@ -4,12 +4,10 @@ This repository is governed by Mozilla's code of conduct and etiquette
 guidelines. For more details, please read the [Mozilla Community Participation
 Guidelines][].
 
-
 ## How to Report
 
 For more information on how to report violations of the Community Participation
 Guidelines, please read our [How to Report][] page.
 
-
-[Mozilla Community Participation Guidelines]: https://www.mozilla.org/about/governance/policies/participation/
-[How to Report]: https://www.mozilla.org/about/governance/policies/participation/reporting/
+[mozilla community participation guidelines]: https://www.mozilla.org/about/governance/policies/participation/
+[how to report]: https://www.mozilla.org/about/governance/policies/participation/reporting/

README.md

@@ -1,35 +1,30 @@
-Project Fluent
-==============
+# Project Fluent
 
 Fluent.js is a JavaScript implementation of Project Fluent, a localization
 framework designed to unleash the expressive power of the natural language.
 
 Project Fluent keeps simple things simple and makes complex things possible.
-The syntax used for describing translations is easy to read and understand.  At
+The syntax used for describing translations is easy to read and understand. At
 the same time it allows, when necessary, to represent complex concepts from
 natural languages like gender, plurals, conjugations, and others.
 
-
-Packages
---------
+## Packages
 
 Fluent.js consists of a set of packages which have different use-cases and can
 be installed independently of each other.
 
-  - [@fluent/bundle](https://github.com/projectfluent/fluent.js/tree/master/fluent-bundle)
-  - [@fluent/dedent](https://github.com/projectfluent/fluent.js/tree/master/fluent-dedent)
-  - [@fluent/dom](https://github.com/projectfluent/fluent.js/tree/master/fluent-dom)
-  - [@fluent/langneg](https://github.com/projectfluent/fluent.js/tree/master/fluent-langneg)
-  - [@fluent/react](https://github.com/projectfluent/fluent.js/tree/master/fluent-react)
-  - [@fluent/sequence](https://github.com/projectfluent/fluent.js/tree/master/fluent-sequence)
-  - [@fluent/syntax](https://github.com/projectfluent/fluent.js/tree/master/fluent-syntax)
+- [@fluent/bundle](https://github.com/projectfluent/fluent.js/tree/master/fluent-bundle)
+- [@fluent/dedent](https://github.com/projectfluent/fluent.js/tree/master/fluent-dedent)
+- [@fluent/dom](https://github.com/projectfluent/fluent.js/tree/master/fluent-dom)
+- [@fluent/langneg](https://github.com/projectfluent/fluent.js/tree/master/fluent-langneg)
+- [@fluent/react](https://github.com/projectfluent/fluent.js/tree/master/fluent-react)
+- [@fluent/sequence](https://github.com/projectfluent/fluent.js/tree/master/fluent-sequence)
+- [@fluent/syntax](https://github.com/projectfluent/fluent.js/tree/master/fluent-syntax)
 
 You can install each of the above packages via `npm`, e.g. `npm install @fluent/react`.  
 See the end of this `README` for instructions on how to build `fluent.js` locally.
 
-
-Learn the FTL syntax
---------------------
+## Learn the FTL syntax
 
 FTL is a localization file format used for describing translation resources.
 FTL stands for _Fluent Translation List_.
@@ -40,34 +35,28 @@ and others.
 
     hello-user = Hello, { $username }!
 
-[Read the Fluent Syntax Guide][] in order to learn more about the syntax.  If
+[Read the Fluent Syntax Guide][] in order to learn more about the syntax. If
 you're a tool author you may be interested in the formal [EBNF grammar][].
 
-[Read the Fluent Syntax Guide]: https://projectfluent.org/fluent/guide/
-[EBNF grammar]: https://github.com/projectfluent/fluent/tree/master/spec
-
+[read the fluent syntax guide]: https://projectfluent.org/fluent/guide/
+[ebnf grammar]: https://github.com/projectfluent/fluent/tree/master/spec
 
-Discuss
--------
+## Discuss
 
-We'd love to hear your thoughts on Project Fluent!  Whether you're a localizer looking 
-for a better way to express yourself in your language, or a developer trying to 
-make your app localizable and multilingual, or a hacker looking for a project 
+We'd love to hear your thoughts on Project Fluent! Whether you're a localizer looking
+for a better way to express yourself in your language, or a developer trying to
+make your app localizable and multilingual, or a hacker looking for a project
 to contribute to, please do get in touch!
 
- - Discourse: https://discourse.mozilla.org/c/fluent
+- Discourse: https://discourse.mozilla.org/c/fluent
 
+## Get Involved
 
-Get Involved
-------------
-
-Fluent.js is open-source, licensed under the Apache License, Version 2.0.  We 
-encourage everyone to take a look at our code and we'll listen to your 
+Fluent.js is open-source, licensed under the Apache License, Version 2.0. We
+encourage everyone to take a look at our code and we'll listen to your
 feedback.
 
-
-Local Development
------------------
+## Local Development
 
 Hacking on `fluent.js` is easy! To quickly get started clone the repo: