ESLint: Disallow warnings in CI (#5261)

Author: watson

package.json

@@ -12,8 +12,8 @@
     "bench:e2e:ci-visibility": "node benchmark/e2e-ci/benchmark-run.js",
     "type:doc": "cd docs && yarn && yarn build",
     "type:test": "cd docs && yarn && yarn test",
-    "lint": "node scripts/check_licenses.js && eslint . && yarn audit",
-    "lint:fix": "node scripts/check_licenses.js && eslint . --fix && yarn audit",
+    "lint": "node scripts/check_licenses.js && eslint . --max-warnings 0 && yarn audit",
+    "lint:fix": "node scripts/check_licenses.js && eslint . --max-warnings 0 --fix && yarn audit",
     "release:proposal": "node scripts/release/proposal",
     "services": "node ./scripts/install_plugin_modules && node packages/dd-trace/test/setup/services",
     "test": "SERVICES=* yarn services && mocha --expose-gc 'packages/dd-trace/test/setup/node.js' 'packages/*/test/**/*.spec.js'",

packages/dd-trace/test/config.spec.js

@@ -1638,7 +1638,7 @@ describe('Config', () => {
 
   it('should not transform the lookup parameter', () => {
     const lookup = () => 'test'
-    const config = new Config({ lookup: lookup })
+    const config = new Config({ lookup })
 
     expect(config.lookup).to.equal(lookup)
   })