mlly

What is mlly?

The mlly npm package is a utility library for working with ES module syntax. It provides functions to analyze and manipulate module specifiers and import/export statements.

What are mlly's main functionalities?

Analyzing import/export statements

This feature allows you to analyze the import and export statements within a given piece of code. It returns an object with details about the imports and exports found.

import { analyzeModule } from 'mlly';
const code = `import { foo } from 'bar';`;
const analysis = analyzeModule(code);

Resolving import/export specifiers

This feature helps in resolving the full path of an import specifier based on the current file's location. It is useful for resolving relative paths.

import { resolveImport } from 'mlly';
const resolved = resolveImport('./foo.js', '/path/to/module.js');

Checking for dynamic imports

This feature checks if a given piece of code contains dynamic imports, which are imports that occur within the execution context rather than statically at the top of the file.

import { hasDynamicImport } from 'mlly';
const code = `const module = import('./module.js');`;
const hasDynamic = hasDynamicImport(code);

Other packages similar to mlly

es-module-lexer

This package provides a lexer for ES module syntax, allowing for the analysis of import/export statements. It is similar to mlly in that it can be used to parse and understand module structures, but it is implemented as a low-level lexer written in WebAssembly for performance.

acorn

Acorn is a JavaScript parser that can be used to analyze and manipulate JavaScript code, including ES modules. While mlly is focused on module syntax, Acorn provides a more general-purpose parsing solution that can handle a wide range of JavaScript features.

rollup

Rollup is a module bundler for JavaScript that includes features for analyzing and bundling ES modules. It is more complex and feature-rich than mlly, offering a complete solution for bundling modules for production use, whereas mlly is more focused on module analysis and manipulation.

README

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