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Dillon Kearns dillonkearns

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Author of elm-graphql and elm-pages. Elm Trainer and Coach at Incremental Elm Consulting.

dillonkearns / elm-eq-demo.sh

Created April 3, 2026 20:35

Demo: Elm 0.19.1 compiles (== -1) to _Utils_eq because negative numbers aren't JS AST literals

	#!/usr/bin/env bash
	# Demonstrates that Elm 0.19.1 compiles (== -1) to _Utils_eq, not ===
	# because negative numbers are JS.Prefix expressions, not JS.Int literals.
	# See: https://github.com/elm/compiler/blob/0.19.1/compiler/src/Generate/JavaScript/Expression.hs#L549-L592

	set -e
	DIR=$(mktemp -d)
	cd "$DIR"

	cat > elm.json << 'EOF'