Fix parsing of boolean command line options (#1815)

CHANGELOG.md

@@ -4,10 +4,17 @@
 
 #### Visual Environment
 
+- [Correct handling of command-line flags.][1815] Command line arguments of the
+  form `--backend=false` or `--backend false` are now handled as expected and
+  turn off the "backend" option. The same fix has been applied to all other
+  boolean command-line options as well.
 - [Visualizations will be attached after project is ready.][1825] This addresses
   a rare issue when initially opened visualizations were automatically closed
   rather than filled with data.
 
+<br/>
+
+[1815]: https://github.com/enso-org/ide/pull/1815
 [1825]: https://github.com/enso-org/ide/pull/1825
 
 # Enso 2.0.0-alpha.16 (2021-09-16)

src/js/lib/client/src/index.js

@@ -103,21 +103,25 @@ optParser.options('project', {
 optParser.options('server', {
     group    : configOptionsGroup,
     describe : 'Run the server [true]',
+    type     : 'boolean',
 })
 
 optParser.options('window', {
     group    : configOptionsGroup,
     describe : 'Show the window [true]',
+    type     : 'boolean',
 })
 
 optParser.options('background-throttling', {
     group    : configOptionsGroup,
     describe : 'Throttle animations when run in background [false]',
+    type     : 'boolean',
 })
 
 optParser.options('backend', {
     group    : configOptionsGroup,
     describe : 'Start the backend process automatically [true]',
+    type     : 'boolean',
 })
 
 optParser.options('backend-path', {
@@ -209,6 +213,7 @@ optParser.options('crash-report-host', {
 
 optParser.options('data-gathering', {
     describe    : 'Enable the sharing of any usage data',
+    type        : 'boolean',
     default     : true
 })