Add command-{name|index} and !command-{name|index} condition to --success

README.md

@@ -146,14 +146,20 @@ General
       --name-separator         The character to split <names> on. Example usage:
                                concurrently -n "styles|scripts|server"
                                --name-separator "|"               [default: ","]
-  -s, --success                Return exit code of zero or one based on the
-                               success or failure of the "first" child to
-                               terminate, the "last child", or succeed only if
-                               "all" child processes succeed.
-                              [choices: "first", "last", "all"] [default: "all"]
+  -s, --success                Which command(s) must exit with code 0 in order
+                               for concurrently exit with code 0 too. Options
+                               are:
+                               - "first" for the first command to exit;
+                               - "last" for the last command to exit;
+                               - "all" for all commands;
+                               - "command-{name}"/"command-{index}" for the
+                               commands with that name or index;
+                               - "!command-{name}"/"!command-{index}" for all
+                               commands but the ones with that name or index.
+                                                                [default: "all"]
   -r, --raw                    Output only raw output of processes, disables
                                prettifying and concurrently coloring.  [boolean]
-      --no-color               Disables colors from logging.           [boolean]
+      --no-color               Disables colors from logging            [boolean]
       --hide                   Comma-separated list of processes to hide the
                                output.
                                The processes can be identified by their name or

bin/concurrently.ts

@@ -48,10 +48,15 @@ const args = yargs(argsBeforeSep)
         'success': {
             alias: 's',
             describe:
-                'Return exit code of zero or one based on the success or failure ' +
-                'of the "first" child to terminate, the "last child", or succeed ' +
-                'only if "all" child processes succeed.',
-            choices: ['first', 'last', 'all'] as const,
+                'Which command(s) must exit with code 0 in order for concurrently exit with ' +
+                'code 0 too. Options are:\n' +
+                '- "first" for the first command to exit;\n' +
+                '- "last" for the last command to exit;\n' +
+                '- "all" for all commands;\n' +
+                // Note: not a typo. Multiple commands can have the same name.
+                '- "command-{name}"/"command-{index}" for the commands with that name or index;\n' +
+                '- "!command-{name}"/"!command-{index}" for all commands but the ones with that ' +
+                'name or index.\n',
             default: defaults.success,
         },
         'raw': {

src/completion-listener.spec.ts

@@ -1,11 +1,16 @@
 import { TestScheduler } from 'rxjs/testing';
+import { CloseEvent } from './command';
 import { CompletionListener, SuccessCondition } from './completion-listener';
 import { createFakeCloseEvent, FakeCommand } from './fixtures/fake-command';
 
 let commands: FakeCommand[];
 let scheduler: TestScheduler;
 beforeEach(() => {
-    commands = [new FakeCommand('foo'), new FakeCommand('bar')];
+    commands = [
+        new FakeCommand('foo', 'echo', 0),
+        new FakeCommand('bar', 'echo', 1),
+        new FakeCommand('baz', 'echo', 2),
+    ];
     scheduler = new TestScheduler(() => true);
 });
 
@@ -15,12 +20,18 @@ const createController = (successCondition?: SuccessCondition) =>
         scheduler,
     });
 
+const emitFakeCloseEvent = (
+    command: FakeCommand,
+    event?: Partial<CloseEvent>,
+) => command.close.next(createFakeCloseEvent({ ...event, command, index: command.index }));
+
 describe('with default success condition set', () => {
     it('succeeds if all processes exited with code 0', () => {
         const result = createController().listen(commands);
 
         commands[0].close.next(createFakeCloseEvent({ exitCode: 0 }));
         commands[1].close.next(createFakeCloseEvent({ exitCode: 0 }));
+        commands[2].close.next(createFakeCloseEvent({ exitCode: 0 }));
 
         scheduler.flush();
 
@@ -32,6 +43,7 @@ describe('with default success condition set', () => {
 
         commands[0].close.next(createFakeCloseEvent({ exitCode: 0 }));
         commands[1].close.next(createFakeCloseEvent({ exitCode: 1 }));
+        commands[2].close.next(createFakeCloseEvent({ exitCode: 0 }));
 
         scheduler.flush();
 
@@ -45,6 +57,7 @@ describe('with success condition set to first', () => {
 
         commands[1].close.next(createFakeCloseEvent({ exitCode: 0 }));
         commands[0].close.next(createFakeCloseEvent({ exitCode: 1 }));
+        commands[2].close.next(createFakeCloseEvent({ exitCode: 1 }));
 
         scheduler.flush();
 
@@ -56,6 +69,7 @@ describe('with success condition set to first', () => {
 
         commands[1].close.next(createFakeCloseEvent({ exitCode: 1 }));
         commands[0].close.next(createFakeCloseEvent({ exitCode: 0 }));
+        commands[2].close.next(createFakeCloseEvent({ exitCode: 0 }));
 
         scheduler.flush();
 
@@ -69,6 +83,7 @@ describe('with success condition set to last', () => {
 
         commands[1].close.next(createFakeCloseEvent({ exitCode: 1 }));
         commands[0].close.next(createFakeCloseEvent({ exitCode: 0 }));
+        commands[2].close.next(createFakeCloseEvent({ exitCode: 0 }));
 
         scheduler.flush();
 
@@ -80,10 +95,117 @@ describe('with success condition set to last', () => {
 
         commands[1].close.next(createFakeCloseEvent({ exitCode: 0 }));
         commands[0].close.next(createFakeCloseEvent({ exitCode: 1 }));
+        commands[2].close.next(createFakeCloseEvent({ exitCode: 1 }));
 
         scheduler.flush();
 
         return expect(result).rejects.toEqual(expect.anything());
     });
 
 });
+
+describe.each([
+    // Use the middle command for both cases to make it more difficult to make a mess up
+    // in the implementation cause false passes.
+    ['command-bar' as const, 'bar'],
+    ['command-1' as const, 1],
+])('with success condition set to %s', (condition, nameOrIndex) => {
+    it(`succeeds if command ${nameOrIndex} exits with code 0`, () => {
+        const result = createController(condition).listen(commands);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 1 });
+        emitFakeCloseEvent(commands[1], { exitCode: 0 });
+        emitFakeCloseEvent(commands[2], { exitCode: 1 });
+
+        scheduler.flush();
+
+        return expect(result).resolves.toEqual(expect.anything());
+    });
+
+    it(`succeeds if all commands ${nameOrIndex} exit with code 0`, () => {
+        commands = [commands[0], commands[1], commands[1]];
+        const result = createController(condition).listen(commands);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 1 });
+        emitFakeCloseEvent(commands[1], { exitCode: 0 });
+        emitFakeCloseEvent(commands[2], { exitCode: 0 });
+
+        scheduler.flush();
+
+        return expect(result).resolves.toEqual(expect.anything());
+    });
+
+    it(`fails if command ${nameOrIndex} exits with non-0 code`, () => {
+        const result = createController(condition).listen(commands);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 0 });
+        emitFakeCloseEvent(commands[1], { exitCode: 1 });
+        emitFakeCloseEvent(commands[2], { exitCode: 0 });
+
+        scheduler.flush();
+
+        return expect(result).rejects.toEqual(expect.anything());
+    });
+
+    it(`fails if some commands ${nameOrIndex} exit with non-0 code`, () => {
+        commands = [commands[0], commands[1], commands[1]];
+        const result = createController(condition).listen(commands);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 1 });
+        emitFakeCloseEvent(commands[1], { exitCode: 0 });
+        emitFakeCloseEvent(commands[2], { exitCode: 1 });
+
+        scheduler.flush();
+
+        return expect(result).resolves.toEqual(expect.anything());
+    });
+
+    it(`fails if command ${nameOrIndex} doesn't exist`, () => {
+        const result = createController(condition).listen([commands[0]]);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 0 });
+        scheduler.flush();
+
+        return expect(result).rejects.toEqual(expect.anything());
+    });
+});
+
+describe.each([
+    // Use the middle command for both cases to make it more difficult to make a mess up
+    // in the implementation cause false passes.
+    ['!command-bar' as const, 'bar'],
+    ['!command-1' as const, 1],
+])('with success condition set to %s', (condition, nameOrIndex) => {
+    it(`succeeds if all commands but ${nameOrIndex} exit with code 0`, () => {
+        const result = createController(condition).listen(commands);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 0 });
+        emitFakeCloseEvent(commands[1], { exitCode: 1 });
+        emitFakeCloseEvent(commands[2], { exitCode: 0 });
+
+        scheduler.flush();
+
+        return expect(result).resolves.toEqual(expect.anything());
+    });
+
+    it(`fails if any commands but ${nameOrIndex} exit with non-0 code`, () => {
+        const result = createController(condition).listen(commands);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 1 });
+        emitFakeCloseEvent(commands[1], { exitCode: 1 });
+        emitFakeCloseEvent(commands[2], { exitCode: 0 });
+
+        scheduler.flush();
+
+        return expect(result).rejects.toEqual(expect.anything());
+    });
+
+    it(`succeeds if command ${nameOrIndex} doesn't exist`, () => {
+        const result = createController(condition).listen([commands[0]]);
+
+        emitFakeCloseEvent(commands[0], { exitCode: 0 });
+        scheduler.flush();
+
+        return expect(result).resolves.toEqual(expect.anything());
+    });
+});

src/completion-listener.ts

@@ -8,8 +8,10 @@ import { CloseEvent, Command } from './command';
  * - `first`: only the first specified command;
  * - `last`: only the last specified command;
  * - `all`: all commands.
+ * - `command-{name|index}`: only the commands with the specified names or index.
+ * - `!command-{name|index}`: all commands but the ones with the specified names or index.
  */
-export type SuccessCondition = 'first' | 'last' | 'all';
+export type SuccessCondition = 'first' | 'last' | 'all' | `command-${string|number}` | `!command-${string|number}`;
 
 /**
  * Provides logic to determine whether lists of commands ran successfully.
@@ -36,19 +38,34 @@ export class CompletionListener {
         this.scheduler = scheduler;
     }
 
-    private isSuccess(exitCodes: (string | number)[]) {
-        switch (this.successCondition) {
-        /* eslint-disable indent */
-            case 'first':
-                return exitCodes[0] === 0;
-
-            case 'last':
-                return exitCodes[exitCodes.length - 1] === 0;
+    private isSuccess(events: CloseEvent[]) {
+        if (this.successCondition === 'first') {
+            return events[0].exitCode === 0;
+        } else if (this.successCondition === 'last') {
+            return events[events.length - 1].exitCode === 0;
+        } else if (!/^!?command-.+$/.test(this.successCondition)) {
+            // If not a `command-` syntax, then it's an 'all' condition or it's treated as such.
+            return events.every(({ exitCode }) => exitCode === 0);
+        }
 
-            default:
-                return exitCodes.every(exitCode => exitCode === 0);
-            /* eslint-enable indent */
+        // Check `command-` syntax condition.
+        // Note that a command's `name` is not necessarily unique,
+        // in which case all of them must meet the success condition.
+        const [, nameOrIndex] = this.successCondition.split('-');
+        const targetCommandsEvents = events.filter(({ command, index }) => (
+            command.name === nameOrIndex
+            || index === Number(nameOrIndex)
+        ));
+        if (this.successCondition.startsWith('!')) {
+            // All commands except the specified ones must exit succesfully
+            return events.every((event) => (
+                targetCommandsEvents.includes(event)
+                || event.exitCode === 0
+            ));
         }
+        // Only the specified commands must exit succesfully
+        return targetCommandsEvents.length > 0
+            && targetCommandsEvents.every(event => event.exitCode === 0);
     }
 
     /**
@@ -62,7 +79,7 @@ export class CompletionListener {
             .pipe(
                 bufferCount(closeStreams.length),
                 switchMap(exitInfos =>
-                    this.isSuccess(exitInfos.map(({ exitCode }) => exitCode))
+                    this.isSuccess(exitInfos)
                         ? Rx.of(exitInfos, this.scheduler)
                         : Rx.throwError(exitInfos, this.scheduler),
                 ),