use minilog for logging, like scratch-gui

package-lock.json

@@ -7314,6 +7314,12 @@
       "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4=",
       "dev": true
     },
+    "microee": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/microee/-/microee-0.0.6.tgz",
+      "integrity": "sha1-oSvbAQNoHosSapsHHrpMRnx4//4=",
+      "dev": true
+    },
     "micromatch": {
       "version": "3.1.10",
       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
@@ -7438,6 +7444,15 @@
         }
       }
     },
+    "minilog": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/minilog/-/minilog-3.1.0.tgz",
+      "integrity": "sha1-0tDxiHyjY9Gs8OqG1cTfKTs/tnU=",
+      "dev": true,
+      "requires": {
+        "microee": "0.0.6"
+      }
+    },
     "minimalistic-assert": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",

package.json

@@ -48,6 +48,7 @@
     "intl": "1.2.5",
     "lodash.bindall": "^4.4.0",
     "lodash.defaultsdeep": "^4.6.1",
+    "minilog": "^3.1.0",
     "mkdirp": "^1.0.4",
     "nets": "^3.2.0",
     "react": "16.2.0",

src/common/log.js

@@ -0,0 +1,12 @@
+import minilog from 'minilog';
+minilog.enable();
+
+const namespace = (() => {
+    switch (process.type) {
+    case 'browser': return 'main';
+    case 'renderer': return 'web';
+    default: return process.type; // probably 'worker' for a web worker
+    }
+})();
+
+export default minilog(`app-${namespace}`);

src/main/index.js

@@ -6,6 +6,7 @@ import {URL} from 'url';
 import {getFilterForExtension} from './FileFilters';
 import telemetry from './ScratchDesktopTelemetry';
 import MacOSMenu from './MacOSMenu';
+import log from '../common/log.js';
 
 telemetry.appWasOpened();
 
@@ -290,10 +291,8 @@ app.on('ready', () => {
                 // WARNING: depending on a lot of things including the version of Electron `installExtension` might
                 // return a promise that never resolves, especially if the extension is already installed.
                 installExtension(extension).then(
-                    // eslint-disable-next-line no-console
-                    extensionName => console.log(`Installed dev extension: ${extensionName}`),
-                    // eslint-disable-next-line no-console
-                    errorMessage => console.error(`Error installing dev extension: ${errorMessage}`)
+                    extensionName => log(`Installed dev extension: ${extensionName}`),
+                    errorMessage => log.error(`Error installing dev extension: ${errorMessage}`)
                 );
             }
         });