sanity-check.sh

sanity-check.sh

#!/bin/sh

# A script I used as a sanity check that PEG.js works with a particular version
# of Node.js.
#
# Example usage:
#
#   nvm use 6.3.1 && PEGJS_DIR=../pegjs ./sanity-check.sh
#

set -e

if [ -z ${PEGJS_DIR+x} ]; then
  echo 'Set PEGJS_DIR to point to a PEG.js checkout before running this script.'
  exit 1
fi

rm -rf package.json node_modules arithmetics.js

# This prevents warnings during "npm install" that would otherwise clutter the
# output.
cat > package.json <<EOT
{
  "private": true
}
EOT

npm install $PEGJS_DIR
node_modules/.bin/pegjs -o arithmetics.js node_modules/pegjs/examples/arithmetics.pegjs
node <<EOT
var parser = require("./arithmetics");
var result = parser.parse("5 + 6");

console.log(result === 11 ? "OK" : "FAIL");
EOT