Usage: kotlinc-js <options> <source files>
where advanced options include:
  -Xfriend-modules=<path>    Paths to friend modules
  -Xfriend-modules-disabled  Disable internal declaration export
  -Xtyped-arrays             Translate primitive arrays to JS typed arrays
  -Xallow-kotlin-package     Allow compiling code in package 'kotlin' and allow not requiring kotlin.stdlib in module-info
  -Xallow-result-return-type Allow compiling code when `kotlin.Result` is used as a return type
  -Xcheck-phase-conditions   Check pre- and postconditions on phases
  -Xcheck-sticky-phase-conditions
                             Run sticky condition checks on subsequent phases as well. Implies -Xcheck-phase-conditions
  -Xcommon-sources=<path>    Sources of the common module that need to be compiled together with this module in the multi-platform mode.
                             Should be a subset of sources passed as free arguments
  -Xcoroutines={enable|warn|error}
                             Enable coroutines or report warnings or errors on declarations and use sites of 'suspend' modifier
  -Xdisable-phases           Disable backend phases
  -Xdump-perf=<path>         Dump detailed performance statistics to the specified file
  -Xeffect-system            Enable experimental language feature: effect system
  -Xexperimental=<fq.name>   Enable and propagate usages of experimental API for marker annotation with the given fully qualified name
  -Xintellij-plugin-root=<path> Path to the kotlin-compiler.jar or directory where IntelliJ configuration files can be found
  -Xlegacy-smart-cast-after-try Allow var smart casts despite assignment in try block
  -Xlist-phases              List backend phases
  -Xmetadata-version         Change metadata version of the generated binary files
  -Xmulti-platform           Enable experimental language support for multi-platform projects
  -Xexclude-from-dumping     Names of elements that should not be dumped
  -Xnew-inference            Enable new experimental generic type inference algorithm
  -Xno-check-actual          Do not check presence of 'actual' modifier in multi-platform projects
  -Xno-inline                Disable method inlining
  -Xphases-to-dump           Dump backend state both before and after these phases
  -Xphases-to-dump-after     Dump backend state after these phases
  -Xphases-to-dump-before    Dump backend state before these phases
  -Xphases-to-validate       Validate backend state both before and after these phases
  -Xphases-to-validate-after Validate backend state after these phases
  -Xphases-to-validate-before Validate backend state before these phases
  -Xplugin=<path>            Load plugins from the given classpath
  -Xprofile-phases           Profile backend phases
  -Xproper-ieee754-comparisons Generate proper IEEE 754 comparisons in all cases if values are statically known to be of primitive numeric types
  -Xread-deserialized-contracts Enable reading of contracts from metadata
  -Xreport-output-files      Report source to output files mapping
  -Xreport-perf              Report detailed performance statistics
  -Xskip-metadata-version-check Load classes with bad metadata version anyway (incl. pre-release classes)
  -Xuse-experimental=<fq.name> Enable, but don't propagate usages of experimental API for marker annotation with the given fully qualified name
  -Xverbose-phases           Be verbose while performing these backend phases

Advanced options are non-standard and may be changed or removed without any notice.
OK