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<!--replace-end-7--><!--replace-end-4--><!--replace-end-1--></head><body><div class="ui fluid container universe"><!--replace-start-2--><!--replace-start-3--><!--replace-start-6--><div class="ui text container" id="zettel-container" style="position: relative"><div class="zettel-view"><article class="ui raised attached segment zettel-content"><div class="pandoc"><h1 id="title-h1">NodeJS scripts</h1><p>If we want to use NodeJS as a scripting language without going to the trouble of setting up an NPM-based development environment, we can use the following architecture.</p><pre><code class="js language-js">#!/usr/bin/env node
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const process = require("process");
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}</code></pre><p>Basically we have a function that contains the main actions of the script. This is then invoked within <code>main</code> in the manner of a Bash or <img alt="Python script" src="/static/Single_file_Python_scripts.md" /></p><p>This obviously requires the Node binary to be in your path and the script must be run with executable privileges.</p><p>If you use any module not in the Node core, you will need to have this installed globally for it to work. (There are <a href="https://thom4.net/2014/self-contained-node-scripts/">ways around this</a> for Node scripts you publish but for personal scripts this doesn’t matter.)</p><h2 id="requiremain"><code>require.main</code></h2><p>This construction checks that the script is being directy invoked via the ‘node’ command in the terminal rather than called by another module.</p><p>This is equivalent to the <a>following construct</a> in Python:</p><pre><code class="py language-py">if __name__ == "__main__":</code></pre></div></article><nav class="ui attached segment deemphasized bottomPane" id="neuron-tags-pane"><div><span class="ui basic label zettel-tag" title="Tag">node-js</span></div></nav><nav class="ui bottom attached icon compact inverted menu blue" id="neuron-nav-bar"><!--replace-start-9--><!--replace-end-9--><a class="right item" href="impulse.html" title="Open Impulse"><i class="wave square icon"></i></a></nav></div></div><!--replace-end-6--><!--replace-end-3--><!--replace-end-2--><div class="ui center aligned container footer-version"><div class="ui tiny image"><a href="https://neuron.zettel.page"><img alt="logo" src="https://raw.githubusercontent.com/srid/neuron/master/assets/neuron.svg" title="Generated by Neuron 1.9.35.3" /></a></div></div></div></body></html> |