all: fix all linter warnings from tsc and eslint

In this changes we introduce eslint as our linter for TypeScript and
update our tsconfig to be more strict.

The ".eslintrc.yaml" and "tsconfig.json" is taken from golang/website
repository [1].

[1]: https://cs.opensource.google/go/x/website

1 files changed, 9 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 12b8152..1266d02 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,17 @@
 ## SPDX-FileCopyrightText: 2021 M. Shulhan <ms@kilabit.info>
 ## SPDX-License-Identifier: GPL-3.0-or-later
 
-.PHONY: all watch
+.PHONY: all
+all: build lint
 
-all:
+.PHONY: lint
+lint:
+	npx eslint --fix .
+
+.PHONY: build
+build:
 	tsc --outDir .
 
+.PHONY: watch
 watch:
 	tsc --outDir . --watch