productionize.yml

#/
# @license Apache-2.0
#
# Copyright (c) 2022 The Stdlib Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#/

# Workflow name:
name: productionize

# Workflow triggers:
on:
  # Run workflow when a new commit is pushed to the repository:
  push:

  # Allow the workflow to be manually run:
  workflow_dispatch:

# Workflow jobs:
jobs:

  # Define a job to create a production build...
  productionize:

    # Define display name:
    name: 'Productionize'

    # Define the type of virtual host machine:
    runs-on: 'ubuntu-latest'

    # Define the sequence of job steps...
    steps:
      # Checkout main branch of repository:
      - name: 'Checkout main branch'
        uses: actions/checkout@v3
        with:
          ref: main

      # Install Node.js:
      - name: 'Install Node.js'
        uses: actions/setup-node@v2
        with:
          node-version: 16
        timeout-minutes: 5

      # Create production branch:
      - name: 'Create production branch'
        run: |
          git checkout -b production

      # Transform error messages:
      - name: 'Transform error messages'
        id: transform-error-messages
        uses: stdlib-js/transform-errors-action@main

      # Format error messages:
      - name: 'Replace double quotes with single quotes in rewritten format string error messages'
        run: |
          find . -name "*.js" -exec sed -E -i "s/Error\( format\( \"([a-zA-Z0-9]+)\"/Error\( format\( '\1'/g" {} \;

      # Format string literal error messages:
      - name: 'Replace double quotes with single quotes in rewritten string literal error messages'
        run: |
          find . -name "*.js" -exec sed -E -i "s/Error\( format\(\"([a-zA-Z0-9]+)\"\)/Error\( format\( '\1' \)/g" {} \;

      # Format code:
      - name: 'Replace double quotes with single quotes in inserted `require` calls'
        run: |
          find . -name "*.js" -exec sed -E -i "s/require\( ?\"@stdlib\/error-tools-fmtprodmsg\" ?\);/require\( '@stdlib\/error-tools-fmtprodmsg' \);/g" {} \;

      # Change `@stdlib/string-format` to `@stdlib/error-tools-fmtprodmsg` in package.json if the former is a dependency, otherwise insert it as a dependency:
      - name: 'Update dependencies in package.json'
        run: |
          if grep -q '"@stdlib/string-format"' package.json; then
            sed -i "s/\"@stdlib\/string-format\"/\"@stdlib\/error-tools-fmtprodmsg\"/g" package.json
          else
            node -e "var pkg = require( './package.json' ); pkg.dependencies[ '@stdlib/error-tools-fmtprodmsg' ] = '^0.0.x'; require( 'fs' ).writeFileSync( 'package.json', JSON.stringify( pkg, null, 2 ) );"
          fi

      # Configure git:
      - name: 'Configure git'
        run: |
          git config --local user.email "noreply@stdlib.io"
          git config --local user.name "stdlib-bot"

      # Commit changes:
      - name: 'Commit changes'
        run: |
          git add -A
          git commit -m "Transform error messages"

      # Push changes:
      - name: 'Push changes'
        run: |
          SLUG=${{ github.repository }}
          echo "Pushing changes to $SLUG..."
          git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$SLUG.git" production --force

  # Define a job for running tests of the productionized code...
  test:

    # Define a display name:
    name: 'Run Tests'

    # Define the type of virtual host machine:
    runs-on: 'ubuntu-latest'

    # Indicate that this job depends on the prior job finishing:
    needs: productionize

    # Run this job regardless of the outcome of the prior job:
    if: always()

    # Define the sequence of job steps...
    steps:

      # Checkout the repository:
      - name: 'Checkout repository'
        uses: actions/checkout@v3
        with:
          # Use the `production` branch:
          ref: production

      # Install Node.js:
      - name: 'Install Node.js'
        uses: actions/setup-node@v2
        with:
          node-version: 16
        timeout-minutes: 5

      # Install dependencies:
      - name: 'Install production and development dependencies'
        id: install
        run: |
          npm install || npm install || npm install
        timeout-minutes: 15

      # Build native add-on if present:
      - name: 'Build native add-on (if present)'
        run: |
          if [ -f "binding.gyp" ]; then
            npm install node-gyp --no-save && ./node_modules/.bin/node-gyp rebuild
          fi

      # Run tests:
      - name: 'Run tests'
        id: tests
        run: |
          npm test || npm test || npm test

  # Define job to create a bundle for use in Deno...
  deno:

    # Define display name:
    name: 'Create Deno bundle'

    # Define the type of virtual host machine on which to run the job:
    runs-on: ubuntu-latest

    # Indicate that this job depends on the prior job finishing:
    needs: productionize

    # Define the sequence of job steps...
    steps:
      # Checkout the repository:
      - name: 'Checkout repository'
        uses: actions/checkout@v3

      # Configure git:
      - name: 'Configure git'
        run: |
          git config --local user.email "noreply@stdlib.io"
          git config --local user.name "stdlib-bot"

      # Check if remote `deno` branch exists:
      - name: 'Check if remote `deno` branch exists'
        id: deno-branch-exists
        continue-on-error: true
        run: |
          git fetch --all
          git ls-remote --exit-code --heads origin deno
          if [ $? -eq 0 ]; then
            echo "::set-output name=remote-exists::true"
          else
            echo "::set-output name=remote-exists::false"
          fi

      # If `deno` exists, delete everything in branch and merge `production` into it
      - name: 'If `deno` exists, delete everything in branch and merge `production` into it'
        if: steps.deno-branch-exists.outputs.remote-exists
        run: |
          git checkout -b deno origin/deno

          find . -type 'f' | grep -v -e ".git/" -e "package.json" -e "README.md" -e "LICENSE"  -e "CONTRIBUTORS" -e "NOTICE" | xargs -r rm
          find . -mindepth 1 -type 'd' | grep -v -e ".git" | xargs -r rm -rf

          git add -A
          git commit -m "Remove files" --allow-empty

          git config merge.theirs.name 'simulate `-s theirs`'
          git config merge.theirs.driver 'cat %B > %A'
          GIT_CONFIG_PARAMETERS="'merge.default=theirs'" git merge origin/production --allow-unrelated-histories

      # If `deno` does not exist, create `deno` branch:
      - name: 'If `deno` does not exist, create `deno` branch'
        if: ${{ steps.deno-branch-exists.outputs.remote-exists == false }}
        run: |
          git checkout production
          git checkout -b deno

      # Copy files to deno directory:
      - name: 'Copy files to deno directory'
        run: |
          mkdir -p deno
          cp README.md LICENSE CONTRIBUTORS NOTICE ./deno

          # Copy TypeScript definitions to deno directory:
          if [ -d index.d.ts ]; then
            cp index.d.ts ./deno/index.d.ts
          fi
          if [ -e ./docs/types/index.d.ts ]; then
            cp ./docs/types/index.d.ts ./deno/mod.d.ts
          fi

      # Install Node.js:
      - name: 'Install Node.js'
        uses: actions/setup-node@v2
        with:
          node-version: 16
        timeout-minutes: 5

      # Install dependencies:
      - name: Install production and development dependencies
        id: install
        run: |
          npm install || npm install || npm install
        timeout-minutes: 15

      # Bundle package for use in Deno:
      - name: 'Bundle package for Deno'
        id: deno-bundle
        uses: stdlib-js/bundle-action@main
        with:
          target: 'deno'

      # Rewrite file contents:
      - name: 'Rewrite file contents'
        run: |
          # Replace links to other packages with links to the deno branch:
          find ./deno -type f -name '*.md' -print0 | xargs -0 sed -Ei "/\/tree\/main/b; /^\[@stdlib[^:]+: https:\/\/github.com\/stdlib-js\// s/(.*)/\\1\/tree\/deno/";

          # Replace reference to `@stdlib/types` with CDN link:
          find ./deno -type f -name '*.ts' -print0 | xargs -0 sed -Ei "s/\/\/\/ <reference types=\"@stdlib\/types\"\/>/\/\/\/ <reference types=\"https:\/\/cdn.jsdelivr.net\/gh\/stdlib-js\/types@main\/index.d.ts\"\/>/g"

          # Change wording of project description to avoid reference to JavaScript and Node.js:
          find ./deno -type f -name '*.md' -print0 | xargs -0 sed -Ei "s/a standard library for JavaScript and Node.js, /a standard library /g"

          # Rewrite all `require()`s to use jsDelivr links:
          find ./deno -type f -name '*.md' -print0 | xargs -0 sed -Ei "/require\( '@stdlib\// {
              s/(var|let|const)\s+([a-z0-9_]+)\s+=\s*require\( '([^']+)' \);/import \2 from \'\3\';/i
              s/@stdlib/https:\/\/cdn.jsdelivr.net\/gh\/stdlib-js/
              s/';/@deno\/mod.js';/
          }"

          # Rewrite first `import` to show importing of named exports if available:
          exports=$(cat lib/index.js | \
            grep -E 'setReadOnly\(.*,.*,.*\)' | \
            sed -E 's/setReadOnly\((.*),(.*),(.*)\);/\2/' | \
            sed -E "s/'//g" | \
            sort)
          if [ -n "$exports" ]; then
            find ./deno -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/\`\`\`javascript\nimport\s+([a-zA-Z0-9_]+)\s+from\s*'([^']+)';\n\`\`\`/\`\`\`javascript\nimport \1 from '\2';\n\`\`\`\n\nYou can also import the following named exports from the package:\n\n\`\`\`javascript\nimport { $(echo $exports | sed -E 's/ /, /g') } from '\2';\n\`\`\`/"
          fi

          # Remove `installation`, `cli`, and `c` sections:
          find ./deno -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/<section class=\"installation\">[^<]+<\/section>//g;"
          find ./deno -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/(\* \* \*\n+)?<section class=\"cli\">[\s\S]+<\!\-\- \/.cli \-\->//g"
          find ./deno -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/(\* \* \*\n+)?<section class=\"c\">[\s\S]+<\!\-\- \/.c \-\->//g"

          # Create package.json file for deno branch:
          jq --indent 2 '{"name": .name, "version": .version, "description": .description, "license": .license, "type": "module", "main": "./mod.js", "homepage": .homepage, "repository": .repository, "bugs": .bugs, "keywords": .keywords, "funding": .funding}' package.json > ./deno/package.json

      # Delete everything in current directory aside from deno folder:
      - name: 'Delete everything in current directory aside from deno folder'
        run: |
          find . -type 'f' | grep -v -e "deno" -e ".git/" | xargs -r rm
          find . -mindepth 1 -type 'd' | grep -v -e "deno" -e ".git" | xargs -r rm -rf

      # Move deno directory to root:
      - name: 'Move deno directory to root'
        run: |
          mv ./deno/* .
          rmdir ./deno

      # Commit changes:
      - name: 'Commit changes'
        run: |
          git add -A
          git commit -m "Auto-generated commit"

      # Push changes to `deno` branch or create new branch tag:
      - name: 'Push changes to `deno` branch or create new branch tag'
        run: |
          SLUG=${{ github.repository }}
          VERSION=$(echo ${{ github.ref }} | sed -E -n 's/refs\/tags\/?(v[0-9]+.[0-9]+.[0-9]+).*/\1/p')
          if [ -z "$VERSION" ]; then
            echo "Workflow job was not triggered by a new tag...."
            echo "Pushing changes to $SLUG..."
            git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$SLUG.git" deno
          else
            echo "Workflow job was triggered by a new tag: $VERSION"
            echo "Creating new bundle branch tag of the form $VERSION-deno"
            git tag -a $VERSION-deno -m "$VERSION-deno"
            git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$SLUG.git" $VERSION-deno
          fi

      # Send status to Slack channel if job fails:
      - name: 'Send status to Slack channel in case of failure'
        uses: act10ns/slack@v1
        with:
          status: ${{ job.status }}
          steps: ${{ toJson(steps) }}
          channel: '#npm-ci'
        if: failure()

  # Define job to create a UMD bundle...
  umd:

    # Define display name:
    name: 'Create UMD bundle'

    # Define the type of virtual host machine on which to run the job:
    runs-on: ubuntu-latest

    # Indicate that this job depends on the prior job finishing:
    needs: productionize

    # Define the sequence of job steps...
    steps:
      # Checkout the repository:
      - name: 'Checkout repository'
        uses: actions/checkout@v3

      # Configure git:
      - name: 'Configure git'
        run: |
          git config --local user.email "noreply@stdlib.io"
          git config --local user.name "stdlib-bot"

      # Check if remote `umd` branch exists:
      - name: 'Check if remote `umd` branch exists'
        id: umd-branch-exists
        continue-on-error: true
        run: |
          git fetch --all
          git ls-remote --exit-code --heads origin umd
          if [ $? -eq 0 ]; then
            echo "::set-output name=remote-exists::true"
          else
            echo "::set-output name=remote-exists::false"
          fi

      # If `umd` exists, delete everything in branch and merge `production` into it
      - name: 'If `umd` exists, delete everything in branch and merge `production` into it'
        if: steps.umd-branch-exists.outputs.remote-exists
        run: |
          git checkout -b umd origin/umd

          find . -type 'f' | grep -v -e ".git/" -e "package.json" -e "README.md" -e "LICENSE"  -e "CONTRIBUTORS" -e "NOTICE" | xargs -r rm
          find . -mindepth 1 -type 'd' | grep -v -e ".git" | xargs -r rm -rf

          git add -A
          git commit -m "Remove files" --allow-empty

          git config merge.theirs.name 'simulate `-s theirs`'
          git config merge.theirs.driver 'cat %B > %A'
          GIT_CONFIG_PARAMETERS="'merge.default=theirs'" git merge origin/production --allow-unrelated-histories

      # If `umd` does not exist, create `umd` branch:
      - name: 'If `umd` does not exist, create `umd` branch'
        if: ${{ steps.umd-branch-exists.outputs.remote-exists == false }}
        run: |
          git checkout production
          git checkout -b umd

      # Copy files to umd directory:
      - name: 'Copy files to umd directory'
        run: |
          mkdir -p umd
          cp README.md LICENSE CONTRIBUTORS NOTICE ./umd

      # Install Node.js
      - name: 'Install Node.js'
        uses: actions/setup-node@v2
        with:
          node-version: 16
        timeout-minutes: 5

      # Install dependencies:
      - name: 'Install production and development dependencies'
        id: install
        run: |
          npm install || npm install || npm install
        timeout-minutes: 15

      # Extract alias:
      - name: 'Extract alias'
        id: extract-alias
        run: |
          alias=$(grep -E 'require\(' README.md | head -n 1 |  sed -E 's/^var ([a-zA-Z0-9_]+) = .+/\1/')
          echo "::set-output name=alias::${alias}"

      # Create Universal Module Definition (UMD) Node.js bundle:
      - name: 'Create Universal Module Definition (UMD) Node.js bundle'
        id: umd-bundle-node
        uses: stdlib-js/bundle-action@main
        with:
          target: 'umd-node'
          alias: ${{ steps.extract-alias.outputs.alias }}

      # Create Universal Module Definition (UMD) browser bundle:
      - name: 'Create Universal Module Definition (UMD) browser bundle'
        id: umd-bundle-browser
        uses: stdlib-js/bundle-action@main
        with:
          target: 'umd-browser'
          alias: ${{ steps.extract-alias.outputs.alias }}

      # Rewrite file contents:
      - name: 'Rewrite file contents'
        run: |

          # Replace links to other packages with links to the umd branch:
          find ./umd -type f -name '*.md' -print0 | xargs -0 sed -Ei "/\/tree\/main/b; /^\[@stdlib[^:]+: https:\/\/github.com\/stdlib-js\// s/(.*)/\\1\/tree\/umd/";

          # Remove `installation`, `cli`, and `c` sections:
          find ./umd -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/<section class=\"installation\">[^<]+<\/section>//g;"
          find ./umd -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/(\* \* \*\n+)?<section class=\"cli\">[\s\S]+<\!\-\- \/.cli \-\->//g"
          find ./umd -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/(\* \* \*\n+)?<section class=\"c\">[\s\S]+<\!\-\- \/.c \-\->//g"

          # Rewrite first `require()` to show consumption of the UMD bundle in Observable and via a `script` tag:
          find ./umd -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/\`\`\`javascript\n(var|let|const)\s+([a-zA-Z0-9_]+)\s+=\s*require\( '\@stdlib\/([^']+)' \);\n\`\`\`/To use in Observable,\n\n\`\`\`javascript\n\2 = require\( 'https:\/\/cdn.jsdelivr.net\/gh\/stdlib-js\/\3\@umd\/browser.js' \)\n\`\`\`\n\nTo vendor stdlib functionality and avoid installing dependency trees for Node.js, you can use the UMD server build:\n\n\`\`\`javascript\nvar \2 = require\( 'path\/to\/vendor\/umd\/\3\/index.js' \)\n\`\`\`\n\nTo include the bundle in a webpage,\n\n\`\`\`html\n<script type=\"text\/javascript\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/stdlib-js\/\3\@umd\/browser.js\"><\/script>\n\`\`\`\n\nIf no recognized module system is present, access bundle contents via the global scope:\n\n\`\`\`html\n<script type=\"text\/javascript\">\n    window.\2;\n<\/script>\n\`\`\`/"

          # Rewrite examples section to be a HTML file:
          find ./umd -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/\#\# Examples([\s\S]*)\`\`\`javascript([\s\S]+?)\`\`\`/\#\# Examples\1\`\`\`html\n<\!DOCTYPE html>\n<html lang=\"en\">\n<body>\n<script type=\"text\/javascript\">\2\n<\/script>\n<\/body>\n<\/html>\n\`\`\`/"

          # Rewrite all `require()`s in the examples section as `script` tags loading the respective UMD bundle:
          find ./umd -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "1 while s/<script type=\"text\/javascript\">\n(var|let|const)\s+([a-zA-Z0-9_]+)\s+=\s*require\( '\@stdlib\/([^']+)' \);?/<script type=\"text\/javascript\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/stdlib-js\/\3\@umd\/browser.js\"><\/script>\n<script type=\"text\/javascript\">/g"

          # Wrap contents of `<script type="text/javascript">` tag contents in an IIFE:
          find ./umd -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/<script type=\"text\/javascript\">([\s\S]+?)<\/script>/<script type=\"text\/javascript\">\n\(function \(\) {\1}\)\(\);\n<\/script>/g"

          # Create package.json file for umd branch:
          jq --indent 2 '{"name": .name, "version": .version, "description": .description, "license": .license, "main": "./index.js", "homepage": .homepage, "repository": .repository, "bugs": .bugs, "keywords": .keywords, "funding": .funding}' package.json > ./umd/package.json

      # Delete everything in current directory aside from umd folder:
      - name: 'Delete everything in current directory aside from umd folder'
        run: |
          find . -type 'f' | grep -v -e "umd" -e ".git/" | xargs -r rm
          find . -mindepth 1 -type 'd' | grep -v -e "umd" -e ".git" | xargs -r rm -rf

      # Move umd directory to root:
      - name: 'Move umd directory to root'
        run: |
          mv ./umd/* .
          rmdir ./umd

      # Commit changes:
      - name: 'Commit changes'
        run: |
          git add -A
          git commit -m "Auto-generated commit"

      # Push changes to `umd` branch or create new branch tag:
      - name: 'Push changes to `umd` branch or create new branch tag'
        run: |
          SLUG=${{ github.repository }}
          VERSION=$(echo ${{ github.ref }} | sed -E -n 's/refs\/tags\/?(v[0-9]+.[0-9]+.[0-9]+).*/\1/p')
          if [ -z "$VERSION" ]; then
            echo "Workflow job was not triggered by a new tag...."
            echo "Pushing changes to $SLUG..."
            git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$SLUG.git" umd
          else
            echo "Workflow job was triggered by a new tag: $VERSION"
            echo "Creating new bundle branch tag of the form $VERSION-umd"
            git tag -a $VERSION-umd -m "$VERSION-umd"
            git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$SLUG.git" $VERSION-umd
          fi

      # Send status to Slack channel if job fails:
      - name: 'Send status to Slack channel in case of failure'
        uses: act10ns/slack@v1
        with:
          status: ${{ job.status }}
          steps: ${{ toJson(steps) }}
          channel: '#npm-ci'
        if: failure()

  # Define job to create ES module build...
  esm:

    # Define display name:
    name: 'Create ES module build'

    # Define the type of virtual host machine on which to run the job:
    runs-on: ubuntu-latest

    # Indicate that this job depends on the prior job finishing:
    needs: productionize

    # Define the sequence of job steps...
    steps:
      # Checkout the repository:
      - name: 'Checkout repository'
        uses: actions/checkout@v3

      # Configure git:
      - name: 'Configure git'
        run: |
          git config --local user.email "noreply@stdlib.io"
          git config --local user.name "stdlib-bot"

      # Check if remote `esm` branch exists:
      - name: 'Check if remote `esm` branch exists'
        id: esm-branch-exists
        continue-on-error: true
        run: |
          git fetch --all
          git ls-remote --exit-code --heads origin esm
          if [ $? -eq 0 ]; then
            echo "::set-output name=remote-exists::true"
          else
            echo "::set-output name=remote-exists::false"
          fi

      # If `esm` exists, delete everything in branch and merge `production` into it
      - name: 'If `esm` exists, delete everything in branch and merge `production` into it'
        if: steps.esm-branch-exists.outputs.remote-exists
        run: |
          git checkout -b esm origin/esm

          find . -type 'f' | grep -v -e ".git/" -e "package.json" -e "README.md" -e "LICENSE"  -e "CONTRIBUTORS" -e "NOTICE" | xargs -r rm
          find . -mindepth 1 -type 'd' | grep -v -e ".git" | xargs -r rm -rf

          git add -A
          git commit -m "Remove files" --allow-empty

          git config merge.theirs.name 'simulate `-s theirs`'
          git config merge.theirs.driver 'cat %B > %A'
          GIT_CONFIG_PARAMETERS="'merge.default=theirs'" git merge origin/production --allow-unrelated-histories

      # If `esm` does not exist, create `esm` branch:
      - name: 'If `esm` does not exist, create `esm` branch'
        if: ${{ steps.esm-branch-exists.outputs.remote-exists == false }}
        run: |
          git checkout production
          git checkout -b esm

      # Copy files to esm directory:
      - name: 'Copy files to esm directory'
        run: |
          mkdir -p esm
          cp README.md LICENSE CONTRIBUTORS NOTICE ./esm

          # Copy TypeScript definitions to esm directory:
          if [ -e ./docs/types/index.d.ts ]; then
            cp ./docs/types/index.d.ts ./esm/index.d.ts
          fi
          if [ -d index.d.ts ]; then
            cp index.d.ts ./esm/index.d.ts
          fi

      # Install Node.js:
      - name: 'Install Node.js'
        uses: actions/setup-node@v2
        with:
          node-version: 16
        timeout-minutes: 5

      # Install dependencies:
      - name: 'Install production and development dependencies'
        id: install
        run: |
          npm install || npm install || npm install
        timeout-minutes: 15

      # Create ES Module (ESM) bundle:
      - name: 'Create ES Module (ESM) bundle'
        id: esm-bundle
        uses: stdlib-js/bundle-action@main
        with:
          target: 'esm'

      # Rewrite file contents:
      - name: 'Rewrite file contents'
        run: |

          # Replace links to other packages with links to the esm branch:
          find ./esm -type f -name '*.md' -print0 | xargs -0 sed -Ei "/\/tree\/main/b; /^\[@stdlib[^:]+: https:\/\/github.com\/stdlib-js\// s/(.*)/\\1\/tree\/esm/";

          # Replace reference to `@stdlib/types` with esm link:
          find ./esm -type f -name '*.ts' -print0 | xargs -0 sed -Ei "s/\/\/\/ <reference types=\"@stdlib\/types\"\/>/\/\/\/ <reference types=\"https:\/\/cdn.jsdelivr.net\/gh\/stdlib-js\/types@esm\/index.d.ts\"\/>/g"

          # Change wording of project description to avoid reference to JavaScript and Node.js:
          find ./esm -type f -name '*.md' -print0 | xargs -0 sed -Ei "s/a standard library for JavaScript and Node.js, /a standard library /g"

          # Rewrite all `require()`s to use jsDelivr links:
          find ./esm -type f -name '*.md' -print0 | xargs -0 sed -Ei "/require\( '@stdlib\// {
              s/(var|let|const)\s+([a-z0-9_]+)\s+=\s*require\( '([^']+)' \);/import \2 from \'\3\';/i
              s/@stdlib/https:\/\/cdn.jsdelivr.net\/gh\/stdlib-js/
              s/';/@esm\/index.mjs';/
          }"

          # Rewrite first `import` to show importing of named exports if available:
          exports=$(cat lib/index.js | \
            grep -E 'setReadOnly\(.*,.*,.*\)' | \
            sed -E 's/setReadOnly\((.*),(.*),(.*)\);/\2/' | \
            sed -E "s/'//g" | \
            sort)
          if [ -n "$exports" ]; then
            find ./esm -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/\`\`\`javascript\nimport\s+([a-zA-Z0-9_]+)\s+from\s*'([^']+)';\n\`\`\`/\`\`\`javascript\nimport \1 from '\2';\n\`\`\`\n\nYou can also import the following named exports from the package:\n\n\`\`\`javascript\nimport { $(echo $exports | sed -E 's/ /, /g') } from '\2';\n\`\`\`/"
          fi

          # Remove `installation`, `cli`, and `c` sections:
          find ./esm -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/<section class=\"installation\">[^<]+<\/section>//g;"
          find ./esm -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/(\* \* \*\n+)?<section class=\"cli\">[\s\S]+<\!\-\- \/.cli \-\->//g"
          find ./esm -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/(\* \* \*\n+)?<section class=\"c\">[\s\S]+<\!\-\- \/.c \-\->//g"

          # Rewrite examples section to be a HTML file:
          find ./esm -type f -name '*.md' -print0 | xargs -0 perl -0777 -i -pe "s/\#\# Examples([\s\S]*)\`\`\`javascript([\s\S]+?)\`\`\`/\#\# Examples\1\`\`\`html\n<\!DOCTYPE html>\n<html lang=\"en\">\n<body>\n<script type=\"module\">\n\2\n<\/script>\n<\/body>\n<\/html>\n\`\`\`/g"

          # Create package.json file for esm branch:
          jq --indent 2 '{"name": .name, "version": .version, "description": .description, "license": .license, "type": "module", "main": "./index.mjs", "homepage": .homepage, "repository": .repository, "bugs": .bugs, "keywords": .keywords, "funding": .funding}' package.json > ./esm/package.json

      # Delete everything in current directory aside from esm folder:
      - name: 'Delete everything in current directory aside from esm folder'
        run: |
          find . -type 'f' | grep -v -e "esm" -e ".git/" | xargs -r rm
          find . -mindepth 1 -type 'd' | grep -v -e "esm" -e ".git" | xargs -r rm -rf

      # Move esm directory to root:
      - name: 'Move esm directory to root'
        run: |
          mv ./esm/* .
          rmdir ./esm

      # Commit changes:
      - name: 'Commit changes'
        run: |
          git add -A
          git commit -m "Auto-generated commit"

      # Push changes to `esm` branch or create new branch tag:
      - name: 'Push changes to `esm` branch or create new branch tag'
        run: |
          SLUG=${{ github.repository }}
          VERSION=$(echo ${{ github.ref }} | sed -E -n 's/refs\/tags\/?(v[0-9]+.[0-9]+.[0-9]+).*/\1/p')
          if [ -z "$VERSION" ]; then
            echo "Workflow job was not triggered by a new tag...."
            echo "Pushing changes to $SLUG..."
            git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$SLUG.git" esm
          else
            echo "Workflow job was triggered by a new tag: $VERSION"
            echo "Creating new bundle branch tag of the form $VERSION-esm"
            git tag -a $VERSION-esm -m "$VERSION-esm"
            git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$SLUG.git" $VERSION-esm
          fi

      # Send status to Slack channel if job fails:
      - name: 'Send status to Slack channel in case of failure'
        uses: act10ns/slack@v1
        with:
          status: ${{ job.status }}
          steps: ${{ toJson(steps) }}
          channel: '#npm-ci'
        if: failure()