chore: improve bash script robustness

scripts/build.sh

@@ -3,7 +3,7 @@
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 npm run dist
-${DIR}/prepare.sh
+"${DIR}"/prepare.sh
 
 # Link the build so that the examples are always testing the
 # current build, in it's properly exported format
@@ -12,10 +12,11 @@ ${DIR}/prepare.sh
 
 echo "Running e2e examples build for node version ${TRAVIS_NODE_VERSION}"
 for i in examples/*; do
+  [ -e "$i" ] || continue # prevent failure if there are no examples
   echo "------------------------------------------------"
   echo "------------> continuing to test example project: $i"
   cd "$i"
-  if [[ $i =~ "karma" ]]; then
+  if [[ "$i" =~ "karma" ]]; then
     echo "linking pact-web"
     npm link @pact-foundation/pact-web
   else

scripts/create_npmrc_file.sh

@@ -1,7 +1,9 @@
+#!/bin/bash -e
+
 set +x #Don't echo the NPM key
 
 NPMRC_FILE=.npmrc
-echo "@pact-foundation:registry=https://registry.npmjs.org/" > $NPMRC_FILE
+echo  "@pact-foundation:registry=https://registry.npmjs.org/" > $NPMRC_FILE
 echo "//registry.npmjs.org/:_authToken=${NPM_KEY}" >> $NPMRC_FILE
 echo "//registry.npmjs.org/:username=pact-foundation" >> $NPMRC_FILE
 echo "//registry.npmjs.org/:email=pact-foundation@googlegroups.com" >> $NPMRC_FILE

scripts/prepare.sh

@@ -9,9 +9,9 @@ artifacts=(LICENSE *md package.json)
 
 for artifact in "${artifacts[@]}"; do
   echo "    Copying ${artifact} => ./dist/${artifact}"
-  cp ${artifact} ./dist/${artifact}
+  cp "${artifact}" "./dist/${artifact}"
   echo "    Copying ${artifact} => ./dist-web/${artifact}"
-  cp ${artifact} ./dist-web/${artifact}
+  cp "${artifact}" "./dist-web/${artifact}"
 done
 
 echo "--> Creating pact-web package"
@@ -21,7 +21,7 @@ sed "s/VERSION/${VERSION}/g" < package.json.web > dist-web/package.json
 types=( $(find dist -name "*.d.ts" | grep -v node_modules | sed 's/dist\///') )
 for type in "${types[@]}"; do
   echo "    Copying ${type} => ./dist-web/${type}"
-  echo "creating dir: " $(dirname "./dist-web/${type}")
-  mkdir -p $(dirname "./dist-web/${type}")
+  echo "creating dir: $(dirname "./dist-web/${type}")"
+  mkdir -p "$(dirname "./dist-web/${type}")"
   cp -r "dist/${type}" "./dist-web/${type}"
 done

scripts/publish.sh

@@ -2,7 +2,7 @@
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
-${DIR}/prepare.sh
+"${DIR}"/prepare.sh
 
 VERSION=$(grep '\"version\"' package.json | grep -E -o "([0-9\.]+(-[a-z\.0-9]+)?)")
 echo "--> Releasing version ${VERSION}"