Use formula-haversine in your Deno project

You have a number of ways to add formula-haversine to your project. This install command might feel most familar to regular npm users.

$ deno install npm:formula-haversine

Other ways to add formula-haversine to your project:

Importing packages directly

Using the npm prefix in an import statement imports the package directly from npm.*

Learn more about inline import statements

main.ts

import formula-haversine from "npm:formula-haversine";

Using the Deno CLI

Use deno add or deno install to add packages to your project.*

Learn more about adding packages with the Deno CLI

$ deno install npm:formula-haversine

Using an import map

Use an import map to map the npm package to a local import.*

Learn more about import maps in Deno

deno.json

...
{
  "imports": {
    "formula-haversine": "npm:formula-haversine"
    ...
  }
}

main.ts

import formula-haversine from "formula-haversine";

*Examples shown here use general import syntax, but exports and proper usage vary depending on the package. See package docs for specific usage instructions.

Manage dependency versions with ease

Did you know Deno has a built-in dependency version manager?

Whether your packages are from npm or JSR, Deno can help you manage them and keep the installed versions up-to-date.

Use deno outdated to track and manage dependecy versions in your project.

$ deno outdated

┌───────────┬─────────┬────────┬────────┐
│ Package   │ Current │ Update │ Latest │
├───────────┼─────────┼────────┼────────┤
│ npm:react │ 18.2.0  │ 18.2.0 │ 19.1.0 │
├───────────┼─────────┼────────┼────────┤
│ npm:vite  │ 4.5.10  │ 4.5.11 │ 6.2.4  │
└───────────┴─────────┴────────┴────────┘

Learn more about using Deno to update your dependencies

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