Unexplained code snippet: templates.keys() iterating over templates in Webpack - what does it signify?

I'm exploring ways to include html templates in a Webpack bundle using ngTemplate-loader and html-template-loader. While examining code from another project, I came across two lines that achieve this:

const templates = require.context(__dirname, true, /\.html$/);
templates.keys().forEach(templates);

The first line seems straightforward - it recursively requires all html files in the current directory and adds them to $templateCache.

However, the purpose of the second line is quite perplexing to me. Can anyone explain its significance?

javascriptangularjswebpack

Answer №1

templates.keys() will provide an array of file paths that have been matched:

['./script1.js', './script2.js'].forEach(templates);

Subsequently, forEach will call the templates function (which uses require with the context set to __dirname) for each file:

templates('./script1.js');
templates('./script2.js');

alternatively:

require('./script1.js'); // these files will be located relative to __dirname
require('./script2.js');

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