feat: add EXIT log level

test/logger.spec.ts

@@ -45,7 +45,8 @@ export class LoggerSpec {
 
   @test
   async 'default log level'() {
-    expect((Logger as any).getLogLevel()).to.be.equal(31);
+    expect((Logger as any).getLevel('LOG')).to.be.equal(31);
+    expect((Logger as any).getLevel('EXIT')).to.be.equal(0);
   }
 
   @test
@@ -131,6 +132,50 @@ export class LoggerSpec {
     expect(spy.__spy.calls[0][0]).to.contain('Foobar');
   }
 
+  @test
+  async exits() {
+    const infoSpy = LoggerSpec.sandbox.on(console, 'info', () => {
+      // noop
+    });
+    const logSpy = LoggerSpec.sandbox.on(console, 'log', () => {
+      // noop
+    });
+    const warnSpy = LoggerSpec.sandbox.on(console, 'warn', () => {
+      // noop
+    });
+    const errorSpy = LoggerSpec.sandbox.on(console, 'error', () => {
+      // noop
+    });
+    const processSpy = LoggerSpec.sandbox.on(process, 'exit', () => {
+      // noop
+    });
+
+    const exitLevel = process.env.STAPPS_EXIT_LEVEL;
+    process.env.STAPPS_EXIT_LEVEL = '31';
+
+    Logger.info('Foobar');
+    Logger.log('Foobar');
+    Logger.warn('Foobar');
+    Logger.ok('Foobar');
+    await Logger.error('Foobar');
+
+    expect(infoSpy).to.have.been.called.once;
+    expect(infoSpy.__spy.calls[0][0]).to.contain('[INFO]');
+    expect(infoSpy.__spy.calls[0][0]).to.contain('Foobar');
+
+    expect(logSpy).to.have.been.called.twice;
+
+    expect(warnSpy).to.have.been.called.once;
+    expect(warnSpy.__spy.calls[0][0]).to.contain('[WARN]');
+    expect(warnSpy.__spy.calls[0][0]).to.contain('Foobar');
+
+    expect(errorSpy).to.have.been.called.exactly(6);
+
+    expect(processSpy).to.have.been.called.exactly(5);
+
+    process.env.STAPPS_EXIT_LEVEL = exitLevel;
+  }
+
   @test
   'info without output'() {
     const spy = LoggerSpec.sandbox.on(console, 'info', () => {
@@ -343,6 +388,30 @@ export class LoggerSpec {
     delete process.env.STAPPS_LOG_LEVEL;
   }
 
+  @test
+  getExitLevel() {
+    const savedProcess = process;
+
+    // @ts-ignore
+    process = undefined;
+
+    (global as any).window = {
+      STAPPS_EXIT_LEVEL: 0,
+    };
+
+    const stub = LoggerSpec.sandbox.on(console, 'info', () => {
+      // noop
+    });
+
+    Logger.info('Foobar');
+
+    process = savedProcess;
+
+    delete (global as any).window;
+
+    expect(stub).not.to.have.been.called();
+  }
+
   @test
   getLogLevel() {
     const savedProcess = process;