no warnings for release mode

Author: bobzhang

jscomp/stdlib-402/release.ninja

@@ -1,6 +1,6 @@
 
 bsc = ../lib/bsc.exe
-bsc_flags = -absname -no-alias-deps -bs-no-version-header -bs-diagnose -bs-no-check-div-by-zero -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6  -nostdlib  -w -40-49-103 -bin-annot  -bs-no-warn-unimplemented-external  -I runtime  -I others
+bsc_flags = -absname -no-alias-deps -bs-no-version-header -bs-diagnose -bs-no-check-div-by-zero -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6  -nostdlib  -w -40-49-103-3 -bin-annot  -bs-no-warn-unimplemented-external  -I runtime  -I others
 rule cc
     command = $bsc -bs-cmi -bs-cmj $bsc_flags -bs-no-implicit-include  -I stdlib-402 -c $in
     description = $in -> $out

scripts/ninja.js

@@ -785,9 +785,11 @@ async function stdlibNinja(devmode=true){
      * @type [string,string][]
      */
     var bsc_builtin_overrides = [[bsc_flags,`$${bsc_flags} -nopervasives`]]
+    // It is interesting `-w -a` would generate not great code sometimes
+    var warnings = devmode ? '-w -40-49-103' : '-w -40-49-103-3'
     var templateStdlibRules = `
 ${BSC_COMPILER}
-${bsc_flags} = -absname -no-alias-deps -bs-no-version-header -bs-diagnose -bs-no-check-div-by-zero -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6  -nostdlib  -w -40-49-103 -bin-annot  -bs-no-warn-unimplemented-external  -I runtime  -I others
+${bsc_flags} = -absname -no-alias-deps -bs-no-version-header -bs-diagnose -bs-no-check-div-by-zero -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6  -nostdlib  ${warnings} -bin-annot  -bs-no-warn-unimplemented-external  -I runtime  -I others
 rule cc
     command = $bsc -bs-cmi -bs-cmj $${bsc_flags} -bs-no-implicit-include  -I ${ninjaCwd} -c $in
     description = $in -> $out