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Add CLI option for custom entrypoint module #2

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Add CLI option for custom entrypoint module #2

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12 changes: 8 additions & 4 deletions elm-io.sh
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Original file line number Diff line number Diff line change
@@ -1,14 +1,18 @@
#!/usr/bin/env bash
if [ "$#" -ne 2 ]; then
echo "Usage: $0 <generated-js-file> <output-file>"
if [ "$#" = 3 ]; then
MAIN_MODULE=$3
elif [ "$#" = 2 ]; then
MAIN_MODULE=Main
else
echo "Usage: $0 <generated-js-file> <output-file> [<Main>]"
exit 1
fi

read -d '' handler <<- EOF
(function(){
if (typeof Elm === "undefined") { throw "elm-io config error: Elm is not defined. Make sure you call elm-io with a real Elm output file"}
if (typeof Elm.Main === "undefined" ) { throw "Elm.Main is not defined, make sure your module is named Main." };
var worker = Elm.worker(Elm.Main);
if (typeof Elm.${MAIN_MODULE} === "undefined" ) { throw "Elm.${MAIN_MODULE} is not defined, make sure your module is named Main." };
var worker = Elm.worker(Elm.${MAIN_MODULE});
})();
EOF

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