Merge 04039a9 into 08eda4f

bin/concurrently.js

@@ -55,6 +55,13 @@ const args = yargs
             describe: 'Disables colors from logging',
             type: 'boolean'
         },
+        'hide': {
+            describe:
+                'Comma-separated list of processes to hide the output.\n' +
+                'The processes can be identified by their name or index.',
+            default: defaults.hide,
+            type: 'string'
+        },
 
         // Kill others
         'k': {
@@ -135,7 +142,7 @@ const args = yargs
                 'Can be either the index or the name of the process.'
         }
     })
-    .group(['m', 'n', 'name-separator', 'raw', 's', 'no-color'], 'General')
+    .group(['m', 'n', 'name-separator', 'raw', 's', 'no-color', 'h'], 'General')
     .group(['p', 'c', 'l', 't'], 'Prefix styling')
     .group(['i', 'default-input-target'], 'Input handling')
     .group(['k', 'kill-others-on-fail'], 'Killing other processes')
@@ -157,6 +164,7 @@ concurrently(args._.map((command, index) => ({
         : (args.killOthersOnFail ? ['failure'] : []),
     maxProcesses: args.maxProcesses,
     raw: args.raw,
+    hide: args.hide.split(','),
     prefix: args.prefix,
     prefixColors: args.prefixColors.split(','),
     prefixLength: args.prefixLength,

bin/concurrently.spec.js

@@ -163,6 +163,26 @@ describe('--raw', () => {
     });
 });
 
+describe('--hide', () => {
+    it('hides the output of a process by its index', done => {
+        const child = run('--hide 1 "echo foo" "echo bar"');
+        child.log.pipe(buffer(child.close)).subscribe(lines => {
+            expect(lines).toContainEqual(expect.stringContaining('foo'));
+            expect(lines).not.toContainEqual(expect.stringContaining('bar'));
+            done();
+        }, done);
+    });
+
+    it('hides the output of a process by its name', done => {
+        const child = run('-n foo,bar --hide bar "echo foo" "echo bar"');
+        child.log.pipe(buffer(child.close)).subscribe(lines => {
+            expect(lines).toContainEqual(expect.stringContaining('foo'));
+            expect(lines).not.toContainEqual(expect.stringContaining('bar'));
+            done();
+        }, done);
+    });
+});
+
 describe('--names', () => {
     it('is aliased to -n', done => {
         const child = run('-n foo,bar "echo foo" "echo bar"');

index.js

@@ -11,6 +11,7 @@ const Logger = require('./src/logger');
 
 module.exports = exports = (commands, options = {}) => {
     const logger = new Logger({
+        hide: options.hide,
         outputStream: options.outputStream || process.stdout,
         prefixFormat: options.prefix,
         prefixLength: options.prefixLength,

src/defaults.js

@@ -10,6 +10,8 @@ module.exports = {
     handleInput: false,
     // How many processes to run at once
     maxProcesses: 0,
+    // Indices and names of commands whose output to be not logged
+    hide: '',
     nameSeparator: ',',
     // Which prefix style to use when logging processes output.
     prefix: '',

src/logger.js

@@ -5,7 +5,11 @@ const formatDate = require('date-fns/format');
 const defaults = require('./defaults');
 
 module.exports = class Logger {
-    constructor({ outputStream, prefixFormat, prefixLength, raw, timestampFormat }) {
+    constructor({ hide, outputStream, prefixFormat, prefixLength, raw, timestampFormat }) {
+        // To avoid empty strings from hiding the output of commands that don't have a name,
+        // keep in the list of commands to hide only strings with some length.
+        // This might happen through the CLI when no `--hide` argument is specified, for example.
+        this.hide = _.castArray(hide).filter(name => name || name === 0).map(String);
         this.raw = raw;
         this.outputStream = outputStream;
         this.prefixFormat = prefixFormat;
@@ -76,6 +80,10 @@ module.exports = class Logger {
     }
 
     logCommandText(text, command) {
+        if (this.hide.includes(String(command.index)) || this.hide.includes(command.name)) {
+            return;
+        }
+
         const prefix = this.colorText(command, this.getPrefix(command));
         return this.log(prefix + (prefix ? ' ' : ''), text);
     }

src/logger.spec.js

@@ -176,6 +176,20 @@ describe('#logCommandText()', () => {
 
         expect(logger.log).toHaveBeenCalledWith(chalk.hex(prefixColor)('[1]') + ' ', 'foo');
     });
+
+    it('does nothing if command is hidden by name', () => {
+        const logger = createLogger({ hide: ['abc'] });
+        logger.logCommandText('foo', { name: 'abc' });
+
+        expect(logger.log).not.toHaveBeenCalled();
+    });
+
+    it('does nothing if command is hidden by index', () => {
+        const logger = createLogger({ hide: [3] });
+        logger.logCommandText('foo', { index: 3 });
+
+        expect(logger.log).not.toHaveBeenCalled();
+    });
 });
 
 describe('#logCommandEvent()', () => {
@@ -186,6 +200,20 @@ describe('#logCommandEvent()', () => {
         expect(logger.log).not.toHaveBeenCalled();
     });
 
+    it('does nothing if command is hidden by name', () => {
+        const logger = createLogger({ hide: ['abc'] });
+        logger.logCommandEvent('foo', { name: 'abc' });
+
+        expect(logger.log).not.toHaveBeenCalled();
+    });
+
+    it('does nothing if command is hidden by index', () => {
+        const logger = createLogger({ hide: [3] });
+        logger.logCommandEvent('foo', { index: 3 });
+
+        expect(logger.log).not.toHaveBeenCalled();
+    });
+
     it('logs text in gray dim', () => {
         const logger = createLogger();
         logger.logCommandEvent('foo', { index: 1 });