Adding that to Additional Compiler Options causes a whole heap of different errors and warnings. And the Hello World page does not appear in the browser.
These are the errors - WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/HTMLElementWrapper.js:93: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/HTMLElementWrapper.js:93: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/HTMLElementWrapper.js:280: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/IRenderedObject.js:27: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : /** * @type {org.apache.flex.core.WrappedHTMLElement} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/IViewportModel.js:29: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : /** * @type {org.apache.flex.geom.Rectangle} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:575: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:867: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : var /** @type {org.apache.flex.core.WrappedHTMLElement} */ e = document.body; : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:895: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : var /** @type {org.apache.flex.core.WrappedHTMLElement} */ p = this.positioner.parentNode; : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:1008: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:1025: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/Alert.js:98: WARNING - Bad type annotation. extra @override/@inheritDoc tag. See https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation for more information. : * @override : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:37: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:44: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:84: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:90: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/supportClasses/Viewport.js:93: WARNING - Type annotation references non-existent type org.apache.flex.geom.Size. : * @param {org.apache.flex.geom.Size} contentSize : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/net/remoting/amf/AMFBinaryData.js:1213: WARNING - unreachable code : return null; : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/reflection/getClassByAlias.js:8: WARNING - Parse error. duplicate @suppress tag : * @suppress {checkTypes|accessControls} : WARNING: 0 error(s), 17 warning(s), 97.4% typed : Sep 15, 2017 3:31:07 PM com.google.javascript.jscomp.LoggerErrorManager println : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/HTMLElementWrapper.js:280: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/IRenderedObject.js:27: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : /** * @type {org.apache.flex.core.WrappedHTMLElement} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/IViewportModel.js:29: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : /** * @type {org.apache.flex.geom.Rectangle} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:575: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:867: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : var /** @type {org.apache.flex.core.WrappedHTMLElement} */ e = document.body; : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:895: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : var /** @type {org.apache.flex.core.WrappedHTMLElement} */ p = this.positioner.parentNode; : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:1008: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/core/UIBase.js:1025: WARNING - Type annotation references non-existent type org.apache.flex.core.WrappedHTMLElement. : * @type {org.apache.flex.core.WrappedHTMLElement} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/Alert.js:98: WARNING - Bad type annotation. extra @override/@inheritDoc tag. See https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation for more information. : * @override : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:37: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:44: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:84: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/beads/models/ViewportModel.js:90: WARNING - Type annotation references non-existent type org.apache.flex.geom.Rectangle. : * @type {org.apache.flex.geom.Rectangle} */ : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/html/supportClasses/Viewport.js:93: WARNING - Type annotation references non-existent type org.apache.flex.geom.Size. : * @param {org.apache.flex.geom.Size} contentSize : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/net/remoting/amf/AMFBinaryData.js:1213: WARNING - unreachable code : return null; : WARNING: C:/My Documents/Moonshine/Test/bin/js-debug/org/apache/flex/reflection/getClassByAlias.js:8: WARNING - Parse error. duplicate @suppress tag : * @suppress {checkTypes|accessControls} : ^ : : WARNING: 0 error(s), 17 warning(s), 97.4% typed : Project Build Successfully : The project 'Test' has been successfully compiled and optimized. : 13.920425195 seconds Looks to me like there's something pretty fundamental wrong with the set up. Doug -- Sent from: http://apache-flex-users.2333346.n4.nabble.com/