update example dates from release process

scripts/release.sh

@@ -2,8 +2,20 @@
 
 set -e # always immediately exit upon error
 
+cd "`dirname $0`/.." # start in project root
+
+
+read -p "Do you want to update the example dates? (y/N): " yn
+
+if [[ "$yn" == "y" ]]
+then
+  ./scripts/update-example-dates.sh
+fi
+
+
 npm run ci
 npm run archive
 
+
+# after version script completes, will call postversion hook, which calls `monorepo publish`
 npx monorepo version
-# ^after it completes, will call postversion hook, which calls `monorepo publish`

scripts/require-clean-working-tree.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+# Exits with an error code of there are any uncomitted changes. Derived from:
+# http://stackoverflow.com/questions/3878624/how-do-i-programmatically-determine-if-there-are-uncommited-changes
+
+# optional argument
+working_subdir="$1"
+
+# git complains if empty string path in statements below
+if [[ -z "$working_subdir" ]]
+then
+  working_subdir="."
+fi
+
+# Update the index
+git update-index -q --refresh
+err=0
+
+# Disallow unstaged changes in the working tree
+if ! git diff-files --quiet -- "$working_subdir"
+then
+  echo >&2 "You have unstaged changes."
+  git diff-files --name-status -r -- "$working_subdir" >&2
+  err=1
+fi
+
+# Disallow uncommitted changes in the index
+if ! git diff-index --cached --quiet HEAD --
+then
+  echo >&2 "Your index contains uncommitted changes."
+  git diff-index --cached --name-status -r HEAD -- >&2
+  err=1
+fi
+
+if [ $err = 1 ]
+then
+  echo >&2 "Please commit or stash them."
+  exit 1
+fi

scripts/update-example-dates.sh

@@ -1,12 +1,10 @@
 #!/usr/bin/env bash
 
-# always immediately exit upon error
-set -e
+set -e # always immediately exit upon error
 
-# start in project root
-cd "`dirname $0`/.."
+cd "`dirname $0`/.." # start in project root
 
-./bin/require-clean-working-tree.sh examples
+./scripts/require-clean-working-tree.sh examples
 
 read -p "Enter new year (4 digits): " year
 read -p "Enter new month (2 digits): " month
@@ -25,6 +23,6 @@ find examples -type f \( -name '*.html' -o -name '*.json' \) -print0 \
 
 # build the commit
 git add examples
-git commit --quiet -m "updated demo dates"
+git commit --quiet -m "updated example dates"
 
 echo "Success."