Breaking: refresh config logic (fixes #11510)

- Passed tests in tests/lib/cli-engine.js

.eslintignore

@@ -1,3 +1,4 @@
+/.nyc_output/**
 /build/**
 /coverage/**
 /docs/**

.gitignore

@@ -1,3 +1,4 @@
+/.nyc_output
 /node_modules
 test.js
 coverage/

.nycrc

@@ -0,0 +1,12 @@
+{
+    "include": [
+        "bin/**/*.js",
+        "conf/**/*.js",
+        "lib/**/*.js"
+    ],
+    "reporter": [
+        "lcov",
+        "text-summary"
+    ],
+    "sourceMap": true
+}

Makefile.js

@@ -84,12 +84,7 @@ const NODE = "node ", // intentional extra space
  * @private
  */
 function getTestFilePatterns() {
-    return ls("tests/lib/").filter(pathToCheck => test("-d", `tests/lib/${pathToCheck}`)).reduce((initialValue, currentValues) => {
-        if (currentValues !== "rules") {
-            initialValue.push(`"tests/lib/${currentValues}/**/*.js"`);
-        }
-        return initialValue;
-    }, ["\"tests/lib/rules/**/*.js\"", "\"tests/lib/*.js\"", "\"tests/bin/**/*.js\"", "\"tests/tools/**/*.js\""]).join(" ");
+    return ["\"tests/lib/**/*.js\"", "\"tests/bin/**/*.js\"", "\"tests/tools/**/*.js\""].join(" ");
 }
 
 /**
@@ -567,13 +562,12 @@ target.test = function() {
 
     echo("Running unit tests");
 
-    lastReturn = exec(`${getBinFile("istanbul")} cover ${MOCHA} -- -R progress -t ${MOCHA_TIMEOUT} -c ${TEST_FILES}`);
+    lastReturn = exec(`${getBinFile("nyc")} -- ${MOCHA} -R progress -t ${MOCHA_TIMEOUT} -c ${TEST_FILES}`);
     if (lastReturn.code !== 0) {
         errors++;
     }
 
-    lastReturn = exec(`${getBinFile("istanbul")} check-coverage --statement 99 --branch 98 --function 99 --lines 99`);
-
+    lastReturn = exec(`${getBinFile("nyc")} check-coverage --statement 99 --branch 98 --function 99 --lines 99`);
     if (lastReturn.code !== 0) {
         errors++;
     }

benchmark.js

@@ -0,0 +1,30 @@
+"use strict";
+
+/* eslint no-console: off */
+
+const { CLIEngine } = require(".");
+
+const files = ["bin", "conf", "lib", "tests", "tools", "*.js", ".*.js"];
+const medians = [];
+
+console.log(`Run engine.executeOnFiles(${JSON.stringify(files)})`);
+console.log();
+
+const times = [];
+
+for (let i = 1; i <= 5; ++i) {
+    const startTime = Date.now();
+    const engine = new CLIEngine();
+    const { results } = engine.executeOnFiles(files);
+    const endTime = Date.now();
+
+    times.push(endTime - startTime);
+    console.log(`Time[${i}]: ${endTime - startTime} ms per ${results.length} files`);
+}
+
+const median = times.sort()[times.length / 2 | 0];
+
+medians.push(median);
+console.log();
+console.log(`Median Time: ${median} ms`);
+console.log();

lib/api.js

@@ -5,11 +5,11 @@
 
 "use strict";
 
-const Linter = require("./linter");
+const { Linter } = require("./linter");
 
 module.exports = {
     Linter,
-    CLIEngine: require("./cli-engine"),
+    CLIEngine: require("./cli-engine").CLIEngine,
     RuleTester: require("./testers/rule-tester"),
     SourceCode: require("./util/source-code")
 };