pokemon-showdown/sim
André Bastos Dias e473be87d1
Refactor Let's Go Normal Rules (#11324)
* Allow AVs should take happiness into account

* Default happiness is already set in pokemon.ts

* Default happiness in the validator

natureModify only receives the set, not the actual Pokemon :/

* Implement Let's Go Normal Rules

* Fixes

* Remove EV limit

* Remove condition

* Add EV Limit = 0

Avoid "Pokemon has exactly 0 EVs - did you forget to EV it?"

* Final fix

* Happiness is fixed to 70

* Revert changes

* Rename Let's Go to LGPE

* Re-add comment
2025-08-04 20:48:27 -06:00
..
examples Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
tools Fix random typos (#11020) 2025-04-13 23:59:36 -07:00
battle-actions.ts Modify HP after forme regression (#11261) 2025-07-11 01:32:43 -06:00
battle-queue.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
battle-stream.ts TypeScript: Enable noImplicitOverride 2025-02-26 14:38:32 -08:00
battle.ts Refactor Gen 1 partial trapping (#11189) 2025-07-22 02:12:20 -07:00
dex-abilities.ts Support fuzzy searching /dt etc (#11124) 2025-05-23 00:26:23 -07:00
dex-conditions.ts Simplify Battlefields (#11233) 2025-07-01 08:09:59 -06:00
dex-data.ts Dex: Update isName signature to match expected inputs (#11172) 2025-06-03 15:22:05 -07:00
dex-formats.ts Refactor Let's Go Normal Rules (#11324) 2025-08-04 20:48:27 -06:00
dex-items.ts Support fuzzy searching /dt etc (#11124) 2025-05-23 00:26:23 -07:00
dex-moves.ts Remove unused code (#11215) 2025-06-22 08:21:19 -07:00
dex-species.ts Support fuzzy searching /dt etc (#11124) 2025-05-23 00:26:23 -07:00
DEX.md Move packed team docs out of PROTOCOL.md 2021-06-10 15:04:25 -07:00
dex.ts Add forme names as fuzzy matches 2025-05-30 19:54:00 -07:00
field.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
global-types.ts Refactor Team Preview to avoid code duplication (#11237) 2025-07-12 20:57:05 -06:00
index.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
NONSTANDARD.md Move packed team docs out of PROTOCOL.md 2021-06-10 15:04:25 -07:00
pokemon.ts Refactor Let's Go Normal Rules (#11324) 2025-08-04 20:48:27 -06:00
prng.ts Correctly support Node 18 2025-02-26 21:42:14 -08:00
README.md Slightly improve documentation 2021-11-13 14:17:47 -05:00
side.ts Implement Imprison disabling logic using Test Fight (#11208) 2025-07-22 02:09:45 -07:00
SIM-PROTOCOL.md SIM-PROTOCOL: Update for clarity 2025-05-13 13:29:53 -07:00
SIMULATOR.md Slightly improve sim docs for stdio usage 2024-01-17 21:23:20 -08:00
state.ts Remove useless spreads (#11132) 2025-05-24 16:19:48 -07:00
team-validator.ts Refactor Let's Go Normal Rules (#11324) 2025-08-04 20:48:27 -06:00
TEAMS.md Update packed team Tera Type documentation (#9185) 2022-12-30 13:47:38 -06:00
teams.ts Add August Pet Mod of the Month (#11303) 2025-08-01 07:52:34 -06:00
tsconfig.json Migrate to esbuild for compilation (#9203) 2022-12-22 15:19:29 -06:00

Node.js package

Pokémon Showdown has a Node.js API. It currently only works in Node, not browsers, although we're working on unifying it to work in browsers.

You can install it with the usual:

npm install pokemon-showdown

And you can use it to do the following things:

Simulating battles

See: sim/SIMULATOR.md

Also available as a command-line API!

Validating, generating, and converting teams

See: sim/TEAMS.md

Also available as a command-line API!

Getting Pokédex information

See: sim/DEX.md

Undocumented APIs

Pokémon Showdown's Node.js package has TypeScript definitions for everything it exports, including a lot of undocumented APIs.

Please be aware that any undocumented API is unstable and should not be relied upon not to change. We do not follow semver for undocumented APIs. If you really want to use an undocumented API, remember to pin the exact PS version in your dependencies. You probably also want to follow the API update channel in the Discord server: https://psim.us/devdiscord