build.sh

#!/usr/bin/env bash

set -e

function print_help() {
  echo 'Usage: build.sh [OPTIONS]'
  echo ''
  echo 'Options:'
  echo '  -h,--help         Print this help message and exit'
  echo '  --beta            Build as `-beta` version.'
}

beta=false
while [[ $# -gt 0 ]]; do
  key="$1"
  case $key in
      -h|--help)
        print_help
        exit 0
      ;;
      --beta)
        beta="true"
        shift # past argument
      ;;
      *) # unknown option
        echo 'ERROR: Unknown option'
        echo ''
        print_help
        exit 1
      ;;
  esac
done

# Check if jq is installed
if ! [ -x "$(command -v jq)" ]; then
    echo "jq is not installed" >& 2
    exit 1
fi

# Clean previous packages
if [ -d "pkg" ]; then
    rm -rf pkg
fi

if [ -d "pkg-node" ]; then
    rm -rf pkg-node
fi

# Build for both targets
wasm-pack build --release -t nodejs -d pkg-node
wasm-pack build --release -t web -d pkg

# Get the package name
BASE_NAME=$(jq -r .name pkg/package.json | sed 's/\-/_/g')

PKG_NAME=$(jq -r .name pkg/package.json)
if [[ "$beta" == "true" ]]; then
    PKG_NAME="$PKG_NAME-beta"
fi

# Merge nodejs & browser packages
cp "pkg-node/${BASE_NAME}.d.ts" "pkg/${BASE_NAME}_node.d.ts"
cp "pkg-node/${BASE_NAME}_bg.wasm" "pkg/${BASE_NAME}_bg_node.wasm"
MAIN_SCRIPT=$(sed "s/${BASE_NAME}_bg.wasm/${BASE_NAME}_bg_node.wasm/g" "pkg-node/${BASE_NAME}.js")
echo "$MAIN_SCRIPT" > "pkg/${BASE_NAME}_node.cjs"

PACKAGE_JSON=$(
  jq ".name = \"$PKG_NAME\" |
      .exports = {
        \".\": {
          \"types\": \"./${BASE_NAME}.d.ts\",
          \"import\": \"./${BASE_NAME}.js\",
          \"default\": \"./${BASE_NAME}.js\"
        },
        \"./node\": {
          \"types\": \"./${BASE_NAME}_node.d.ts\",
          \"require\": \"./${BASE_NAME}_node.cjs\",
          \"default\": \"./${BASE_NAME}_node.cjs\"
        }
      } |
      .files += [\"${BASE_NAME}_node.cjs\", \"${BASE_NAME}_node.d.ts\", \"${BASE_NAME}_bg_node.wasm\"]" pkg/package.json
)
echo "$PACKAGE_JSON" > pkg/package.json

rm -rf pkg-node