ESM Loaders: Enhancing Module Loading in Node.js – Gil Tayar, JSNation 2023

Learn about ESM Loaders, a simple way to enhance module loading in Node.js, and how to use them to load modules from various sources and customize the module loading process.

Key takeaways

An ESM loader is a simple way to enhance module loading in Node.js.
A loader always has at least two methods: resolve and load.
resolve takes a specifier and returns a URL, while load takes a URL and returns the source code.
Loaders can be used to load modules from various sources, including HTTP and TypeScript.
To use a loader, add the --loader flag followed by the loader name or path.
Loaders can be chained, allowing you to use multiple loaders for a single module.
ESM loaders can be used to enhance module loading in Node.js by providing a way to resolve and load modules from various sources.
The https: scheme can be used to load modules from HTTPS URLs.
The ts: scheme can be used to load TypeScript modules.
Loaders can be used to transpile ES modules to CommonJS modules.
The resolve method returns a URL, which can be used to load the module.
The load method takes a URL and returns the source code of the module.
Loaders can be used to enhance error handling by providing a way to catch and handle errors during module loading.
ESM loaders can be used to enhance the resolution phase of module loading by providing a way to resolve modules from various sources.
The next_resolve method can be used to resolve a module specifier.
The next_load method can be used to load a module.
Loaders can be used to override the resolution phase of module loading by providing a custom resolver.
The absurl method can be used to absolutize a URL.
The fetch method can be used to load a module from a URL.

ESM Loaders: Enhancing Module Loading in Node.js – Gil Tayar, JSNation 2023

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