Break logical chunks in small file modules

Author: hkdobrev

index.js

@@ -1,32 +1,8 @@
 #!/usr/bin/env node
 
-const cli = require('commander');
-const execa = require('execa');
-const config = require('./src/config');
-const findBinary = require('./src/find-binary');
-const pkg = require('./package.json');
+const cliInit = require('./src/cli-init');
+const configLoad = require('./src/config-load');
+const runAll = require('./src/run-all');
 
-cli
-  .version(pkg.version, '-v, --version')
-  .parse(process.argv);
-
-const binary = `${__dirname}/bin/git-run-if-changed.sh`;
-
-function runCommandsIfFileChanged(fileToCheck, commands) {
-  const commandsList = Array.isArray(commands) ? commands : [commands];
-  const commandsListResolved = commandsList.map((cmd) => {
-    const { binaryPath, args: binaryArgs } = findBinary(cmd);
-
-    return [binaryPath].concat(binaryArgs).join(' ');
-  });
-  const args = [fileToCheck].concat(commandsListResolved);
-  execa(binary, args).stdout.pipe(process.stdout);
-}
-
-Object.entries(config).forEach(([file, commands]) => {
-  if (commands.length === 0) {
-    return;
-  }
-
-  runCommandsIfFileChanged(file, commands);
-});
+cliInit();
+runAll(configLoad());

src/cli-init.js

@@ -0,0 +1,8 @@
+const cli = require('commander');
+const pkg = require('../package.json');
+
+module.exports = function cliInit() {
+  cli
+    .version(pkg.version, '-v, --version')
+    .parse(process.argv);
+};

src/config-load.js

@@ -0,0 +1,13 @@
+const cosmiconfig = require('cosmiconfig');
+
+module.exports = function configLoad() {
+  const configResult = cosmiconfig('run-if-changed').searchSync();
+
+  if (!configResult || configResult.isEmpty) {
+    process.exit(0);
+  }
+
+  const { config } = configResult;
+
+  return config;
+};

src/config.js

@@ -0,0 +1,15 @@
+const runIfFileChanged = require('./run-if-file-changed');
+
+function runCommandsForFile(file, commands) {
+  const commandsList = Array.isArray(commands) ? commands : [commands].filter();
+
+  if (commandsList.length === 0) {
+    return;
+  }
+
+  runIfFileChanged(file, commandsList);
+}
+
+module.exports = function runAll(config) {
+  Object.entries(config).forEach(([file, commands]) => runCommandsForFile(file, commands));
+};

src/run-all.js

@@ -0,0 +1,15 @@
+const execa = require('execa');
+const findBinary = require('./find-binary');
+
+const binary = `${__dirname}/../bin/git-run-if-changed.sh`;
+
+function resolveCommand(command) {
+  const { binaryPath, args: binaryArgs } = findBinary(command);
+
+  return [binaryPath].concat(binaryArgs).join(' ');
+}
+
+module.exports = function runIfFileChanged(fileToCheck, commandsList) {
+  const args = [fileToCheck].concat(commandsList.map(resolveCommand));
+  execa(binary, args).stdout.pipe(process.stdout);
+};