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#!/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
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=$(node -p 'require("./node_modules/fontkit/package.json").version')
cat <<EOF > index.html
<html lang="en"><script type="module">
window.fontkit = require("fontkit")
</script></html>
EOF
./node_modules/.bin/parcel build --no-optimize --no-cache index.html
# strip away HTML
sed -E 's/^\s*(:?<html lang="en"><script type="module">|<\/script><\/html>\s*\n*\s*)//' dist/index.html > dist/1.js
sed -E 's/window.fontkit =/const fontkit =/' dist/1.js > dist/2.js
echo 'export default fontkit' >> dist/2.js
popd >/dev/null
OUTPUT_FILE=${1:-$(cd "$(dirname "$0")/.." && pwd)/res/fontkit-$FONTKIT_VERSION.js}
/tmp/fontkit-build/node_modules/.bin/esbuild /tmp/fontkit-build/dist/2.js \
--minify \
--outfile="$OUTPUT_FILE" \
--format=esm \
--platform=browser \
--target=chrome100
rm -rf /tmp/fontkit-build
|
