Add clj-kondo config and CI lint test.

.circleci/config.yml

@@ -32,6 +32,21 @@ jobs:
           paths:
             - ~/.m2
 
+  lint:
+    executor: clojure
+    steps:
+      - checkout
+      - run:
+          name: Install clj-kondo
+          environment:
+            CLJ_KONDO_VERSION: 2019.12.14
+          command: |
+            wget https://github.com/borkdude/clj-kondo/releases/download/v${CLJ_KONDO_VERSION}/clj-kondo-${CLJ_KONDO_VERSION}-linux-amd64.zip
+            unzip clj-kondo-${CLJ_KONDO_VERSION}-linux-amd64.zip
+      - run:
+          name: Lint source code
+          command: "./clj-kondo --lint core/src core/test tool/src"
+
   style:
     executor: clojure
     steps:
@@ -80,6 +95,7 @@ workflows:
   build:
     jobs:
       - test
+      - lint
       - style:
           requires:
             - test

.clj-kondo/config.edn

@@ -0,0 +1,11 @@
+{:linters {:unresolved-symbol
+           {:exclude [(clojure.test/is [thrown-with-data? valid? invalid?])]}
+
+           ;:unused-binding
+           ;{:exclude-destructured-keys-in-fn-args true}
+
+           :consistent-alias
+           {:level :warning
+            :aliases {clojure.java.io io
+                      clojure.spec.alpha s
+                      clojure.string str}}}}

.gitignore

@@ -7,5 +7,6 @@ pom.xml.asc
 *.class
 .lein-*
 .nrepl-port
+.clj-kondo/.cache
 /cljstyle
 /dist