rsms/build-fontkit.js.sh

## build-fontkit.js.sh
#!/bin/sh
#
# Usage:
#   sh build-fontkit.js.sh [<outfile>]
# <outfile> defaults to ./fontkit-VERSION.js
#
# This script builds fontkit.js for a web browser as an ES module script.
# Use the result like this:
#   <script type="module">
#   import fontkit from "./fontkit-2.0.2.js"
#   let data = await fetch("Inter-Variable.ttf").then(r => r.arrayBuffer())
#   let font = fontkit.create(new Uint8Array(data))
#   let instance = font.getVariation({wght: 600, opsz: 28})
#   console.log({font, instance})
#   </script>
#
# We can't use esbuild but have to use parcel since fontkit relies on
# parcel-specific features like executing nodejs fs.readFileSync at build time.
# So first we build with parcel then use esbuild to minify the results.
# There might be ways to streamline the parcel build process, but after 30 minutes
# of reading their documentation I couldn't figure it out, thus the sed hacks.
#
set -e
#cd "$(dirname "$0")/.."

rm -rf /tmp/fontkit-build
mkdir /tmp/fontkit-build
pushd /tmp/fontkit-build >/dev/null

cat <<EOF > package.json
{ "name": "fontkit-build",
  "version": "1.0.0",
  "dependencies": {
    "buffer": "^6.0.3",
    "fontkit": "^2.0.2",
    "parcel": "^2.9.3",
    "esbuild": "^0.19.2"
  }
}
EOF

npm install

FONTKIT_VERSION=$(node -p 'require("./node_modules/fontkit/package.json").version')

cat <<EOF > index.html
<html lang="en"><script type="module">
window.fontkit = require("fontkit")
</script></html>
EOF

./node_modules/.bin/parcel build --no-optimize --no-cache index.html

# strip away HTML
sed -E 's/^\s*(:?<html lang="en"><script type="module">|<\/script><\/html>\s*\n*\s*)//' dist/index.html > dist/1.js

# convert "window.fontkit = ..." -> "const fontkit ="
sed -E 's/window.fontkit =/const fontkit =/' dist/1.js > dist/2.js

# append default export
echo 'export default fontkit' >> dist/2.js

popd >/dev/null

/tmp/fontkit-build/node_modules/.bin/esbuild /tmp/fontkit-build/dist/2.js \
  --minify \
  --outfile="${1:-fontkit-$FONTKIT_VERSION.js}" \
  --format=esm \
  --platform=browser \
  --target=chrome100

rm -rf /tmp/fontkit-build
	#!/bin/sh
	#
	# Usage:
	# sh build-fontkit.js.sh [<outfile>]
	# <outfile> defaults to ./fontkit-VERSION.js
	#
	# This script builds fontkit.js for a web browser as an ES module script.
	# Use the result like this:
	# <script type="module">
	# import fontkit from "./fontkit-2.0.2.js"
	# let data = await fetch("Inter-Variable.ttf").then(r => r.arrayBuffer())
	# let font = fontkit.create(new Uint8Array(data))
	# let instance = font.getVariation({wght: 600, opsz: 28})
	# console.log({font, instance})
	# </script>
	#
	# We can't use esbuild but have to use parcel since fontkit relies on
	# parcel-specific features like executing nodejs fs.readFileSync at build time.
	# So first we build with parcel then use esbuild to minify the results.
	# There might be ways to streamline the parcel build process, but after 30 minutes
	# of reading their documentation I couldn't figure it out, thus the sed hacks.
	#
	set -e
	#cd "$(dirname "$0")/.."

	rm -rf /tmp/fontkit-build
	mkdir /tmp/fontkit-build
	pushd /tmp/fontkit-build >/dev/null

	cat <<EOF > package.json
	{ "name": "fontkit-build",
	"version": "1.0.0",
	"dependencies": {
	"buffer": "^6.0.3",
	"fontkit": "^2.0.2",
	"parcel": "^2.9.3",
	"esbuild": "^0.19.2"
	}
	}
	EOF

	npm install

	FONTKIT_VERSION=$(node -p 'require("./node_modules/fontkit/package.json").version')

	cat <<EOF > index.html
	<html lang="en"><script type="module">
	window.fontkit = require("fontkit")
	</script></html>
	EOF

	./node_modules/.bin/parcel build --no-optimize --no-cache index.html

	# strip away HTML
	sed -E 's/^\s(:?<html lang="en"><script type="module">\|<\/script><\/html>\s\n\s)//' dist/index.html > dist/1.js

	# convert "window.fontkit = ..." -> "const fontkit ="
	sed -E 's/window.fontkit =/const fontkit =/' dist/1.js > dist/2.js

	# append default export
	echo 'export default fontkit' >> dist/2.js

	popd >/dev/null

	/tmp/fontkit-build/node_modules/.bin/esbuild /tmp/fontkit-build/dist/2.js \
	--minify \
	--outfile="${1:-fontkit-$FONTKIT_VERSION.js}" \
	--format=esm \
	--platform=browser \
	--target=chrome100

	rm -rf /tmp/fontkit-build