NPM INSTALL MODULES WITH DEPENDENCIES HOW TO
NPM INSTALL MODULES WITH DEPENDENCIES CODE

Otherwise, the package is only needed during development time and a dev dependency. If the type definitions of our package refer to type definitions in another package, that package is a normal dependency. Are these normal dependencies or dev dependencies? It depends: Packages whose names start with provide TypeScript type definitions (which enable auto-completion even for JavaScript) for packages that donРІР‚в„ўt include them. That excludes packages that are needed for running tests etc.

The npm docs for scripts explain the package.json property scripts.Р”Вependencies should only contain the packages that are needed when importing a package.

The npm docs for package.json explain various properties of that file.

РІР‚СљAwesome npm scriptsРІР‚Сњ has tips for writing cross-platform scripts.

But they are needed for the script prepack. Note that when we are using an IDE, we donРІР‚в„ўt need the scripts build and watch because we can let the IDE build the artifacts.

prepack: This script is run run before a tarball is packed (due to npm pack, npm publish, and when installing dependencies from git).

test, testall: Use the unit test framework Mocha to run one test or all tests.

tsc must be installed globally or locally (then package typescript would be a dev dependency).

build, watch: Use the TypeScript compiler tsc to compile the TypeScript files according to tsconfig.json.

shx provides a variety of shell commands with the benefit of not needing a separate package for each command we may want to use.

clean: Use the cross-platform package shx to delete the compilation results.

Property scripts defines various commands for building that can be invoked via npm run clean (etc.): The next two subsections cover the remaining properties.

types points to the bundled type declaration file.

main: When using a bare import with just the name of the package, this is the module that will be imported.

js files are interpreted as CommonJS modules.

type: The value 'commonjs' means that.

'shx': 'Needed for development-time package.json scripts' '// devDependencies': 'Needed for unit test assertions (assert.equal() etc.)', 'prepack': 'npm run clean & npm run build' Note that npm ignores the directory node_modules/ by default.

We donРІР‚в„ўt want to upload the TypeScript source files (directory ts/).

We want to upload the results of compiling TypeScript to JavaScript (directory dist/).

When it comes to which files should and should not be uploaded to the npm registry, we have different needs than we did for git.

The files in dist/ are created by the TypeScript compiler (more on that later).

node_modules/ is set up via npm install.

This file lists the directories that we donРІР‚в„ўt want to check into git: node_modules/ Ts/test/index_test.ts -> dist/test/index_test.js This is where the compilation results for the two TypeScript files are put: ts/src/index.ts -> dist/src/index.js

Target: directory dist/ (CommonJS modules the directory doesnРІР‚в„ўt yet exist in the repository).Source: directory ts/ (TypeScript code).

Package.json contains scripts for compiling: tsconfig.json: configuration data for the TypeScript compiler.

NPM INSTALL MODULES WITH DEPENDENCIES CODE

index.ts: the actual code of the package.

This is how the repository ts-demo-npm-cjs is structured: ts-demo-npm-cjs/Р”Р„part from the package.jsonfor the package, the repository contains: js.Р”В®specially on Node.js, TypeScript currently doesnРІР‚в„ўt really support ECMAScript modules and filename extensions other than.

All TypeScript code is compiled to CommonJS modules with the filename extension.

We are using what TypeScript currently supports best: Required knowledge: You should be familiar with how npm packages work. All the artifacts that are shown can be downloaded via the GitHub repository ts-demo-npm-cjs (I deliberately have not published it to npm).

NPM INSTALL MODULES WITH DEPENDENCIES HOW TO

This blog post describes how to use TypeScript to create npm packages with CommonJS modules.

Npm install modules with dependencies