First

.github/workflows/publish.yml

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+name: Publish to NPM
+on:
+  release:
+    types: [ created ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        # Setup .npmrc file to publish to npm
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '12.x'
+          registry-url: 'https://registry.npmjs.org'
+      - run: npm install
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.gitignore

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+torchlight.config.js
+source
+built
+.idea
+node_modules

.npmignore

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+torchlight.config.js
+source
+built
+.idea

index.js

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+#! /usr/bin/env node
+const {program} = require('commander')
+const torchlight = require('./src/torchlight');
+
+command('_default_')
+    .alias('highlight')
+    .description('Highlight <code> blocks in source files')
+    .option('-i, --input <directory>', 'Input directory')
+    .option('-o, --output <directory>', 'Output directory')
+    .option('-g, --globs <pattern>', 'Glob patterns used to search for source files. Separate multiple patterns with commas.')
+    .option('-x, --ignore <pattern>', 'Glob patterns used to ignore source files. Separate multiple patterns with commas.')
+    .option('-w, --watch', 'Watch source files for changes')
+
+command('init')
+    .option('-p, --path <path>', 'Location for the configuration file')
+    .description('Publish the Torchlight configuration file');
+
+command('cache:clear')
+    .description('Clear the cache');
+
+// Bootstrap the Torchlight singleton before every command.
+program.hook('preAction', thisCommand => {
+    torchlight.init(thisCommand.opts().config)
+})
+
+program.parse()
+
+// A helper function to define commands. It takes
+// care of several defaults for every command.
+function command(name) {
+    let cmd = program;
+    let action = name;
+
+    // The default command has no name.
+    if (name !== '_default_') {
+        cmd = cmd.command(name);
+    } else {
+        action = 'highlight';
+    }
+
+    // Namespaced command convention. The command config:cache
+    // has a handler at config/cache.js.
+    action = action.replace(':', '/');
+
+    let handler = require(`./src/commands/${action}`);
+
+    // Add a little shim around the handler so we can pass the
+    // torchlight variable in, just for convenience.
+    cmd.action(function (options) {
+        return handler(torchlight, options);
+    })
+
+    // Options config path
+    return cmd.option('-c, --config <file>', 'Path to the Torchlight configuration file.')
+}