https://github.com/protofire/subgraph-devkit
Happiness kit for subgraph developers
https://github.com/protofire/subgraph-devkit
subgraph thegraph thegraphprotocol tooling toolkit typescript
Last synced: 3 months ago
JSON representation
Happiness kit for subgraph developers
- Host: GitHub
- URL: https://github.com/protofire/subgraph-devkit
- Owner: protofire
- Created: 2023-01-09T14:41:19.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-06-28T15:14:45.000Z (over 1 year ago)
- Last Synced: 2025-06-15T05:42:18.458Z (4 months ago)
- Topics: subgraph, thegraph, thegraphprotocol, tooling, toolkit, typescript
- Language: TypeScript
- Homepage: https://protofire.github.io/subgraph-devkit/
- Size: 214 KB
- Stars: 6
- Watchers: 2
- Forks: 2
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Subgraph Devkit
Happiness kit for subgraph developers
### Features:
- [Oracles](#oracles)
- [x] Token Price Fetching
- [Numbers](#numbers)
- [x] Factories
- [x] Conversion
- [x] Helpers
- [Bytes](#bytes)
- [x] Conversion
- [Testing](#testing)
- [x] Mocking
- [x] Assertions
- [Constants](#constants)
- [x] Addresses
- [x] Units
### Tech Stack:
- AssemblyScript
- Matchstick
### Installation:
```shell
yarn add @protofire/subgraph-devkit
```
### Documentation
#### Oracles
```typescript
import { Address } from "@graphprotocol/graph-ts";
import { oracles } from "@protofire/subgraph-devkit";
const tokenAddress = Address.fromString(
"0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984"
);
// get token price in usd from ChainLink oracle
oracles.chainlink.fetchPriceUSD(tokenAddress);
// get token price in usd from YearnLens oracle
oracles.yearnLens.fetchPriceUSD(tokenAddress);
// get token price in usd from Uniswap oracle
oracles.uniswap.fetchPriceUSD(tokenAddress);
```
#### Numbers
```typescript
import { BigDecimal, BigInt } from "@graphprotocol/graph-ts";
import { decimals, integers } from "@protofire/subgraph-devkit";
// number 0 in BigDecimal
decimals.ZERO;
// number 1 in BigDecimal
decimals.ONE;
// number 0 in BigInt
integers.ZERO;
// number 1 in BigInt
integers.ONE;
// number 10 in BigInt
integers.TEN;
// Get min/max value
const a = BigInt.fromI32(100);
const b = BigInt.fromI32(101);
integers.min(a, b); // => 100
integers.max(a, b); // => 101
// Convert BigInt into Bytes
const n = BigInt.fromI32(100);
integers.toBytes(n);
// Create BigDecimal from BigInt
const n = BigInt.fromI32(1000000);
decimals.fromBigInt(n, 6); // => 1
// Create BigDecimal from Float
decimals.fromFloat(1000000.123);
// Create BigDecimal from Integer
decimals.fromInt(9223372036854775807);
// Convert BigDecimal to BigInt
const n = BigDecimal.fromString("1234.56");
decimals.toBigInt(n); // => 123456
// Get min/max value
const a = BigDecimal.fromString("100.525678");
const b = BigDecimal.fromString("100.525679");
decimals.min(a, b); // => 100.525678
decimals.max(a, b); // => 100.525679
// MakerDAO
// Create BigDecimal from RAD BigInt
const rad = BigInt.fromString(
"12500000000000000000000000000000000000000000000"
);
decimals.fromRad(rad); // => 12.5;
// Create BigDecimal from WAD BigInt
const wad = BigInt.fromString("12500000000000000000");
decimals.fromWad(wad); // => 12.5
// Create BigDecimal from RAY BigInt
const ray = BigInt.fromString("12500000000000000000000000000");
decimals.fromRay(ray); // => 12.5
const value = BigDecimal.fromString("12.5");
// Convert BigDecimal into RAD BigInt
decimals.toRad(value); // => 12500000000000000000000000000000000000000000000
// Convert BigDecimal into RAY BigInt
decimals.toRay(value); // => 12500000000000000000000000000
// Convert BigDecimal into WAD BigInt
decimals.toWad(value); // => 12500000000000000000
```
#### Bytes
```typescript
import { bytes } from "@protofire/subgraph-devkit";
// Convert Bytes into Address
const stringAddress = "0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984";
const bytesAddress = Bytes.fromHexString(stringAddress);
const address = bytes.toAddress(bytesAddress);
// Convert unsigned number in Bytes into BigInt
const bytesData = Bytes.fromHexString("0x28fc");
bytes.toUnsignedBigInt(bytesData); // => 10492
// Convert signed number in Bytes into BigInt
const bytesData = Bytes.fromHexString("0xd704");
bytes.toSignedBigInt(bytesData); // => -10492
```
#### Testing
```typescript
import { BigDecimal } from "@graphprotocol/graph-ts";
import { describe, test } from "matchstick-as/assembly/index";
import { tests } from "@protofire/subgraph-devkit";
describe("decimalEquals", () => {
test("decimal equals to decimal", () => {
const a = BigDeciaml.fromString("100");
const b = BigDeciaml.fromString("100");
tests.asserts.decimalEquals(a, b);
});
});
```
#### Constants
```typescript
import { constants } from "@protofire/subgraph-devkit";
// USDC contract address
constants.addresses.USDC;
// WETH contract address
constants.addresses.WETH;
// UNISWAP_V2_ROUTER_02 contract address
constants.addresses.UNISWAP_V2_ROUTER_02;
// CHAINLINK_FEED_REGISTRY contract address
constants.addresses.CHAINLINK_FEED_REGISTRY;
// YEARN_LENS_ORACLE contract address
constants.addresses.YEARN_LENS_ORACLE;
// USDC unit (BigInt): 1000000
constants.units.USDC;
// MakerDAO
// WAD unit (BigInt): 1000000000000000000
constants.units.WAD;
// RAY unit (BigInt): 1000000000000000000000000000
constants.units.RAY;
// RAD unit (BigInt): 1000000000000000000000000000000000000000000000
constants.units.RAD;
```
### Contributing:
- **Fork** the repo on GitHub
- **Clone** the project to your own machine
- **Commit** changes to your own branch
- **Push** your work back up to your fork
- Submit a **Pull request** so that we can review your changes
### Running Tests
In order to be able to take advantage of matchstick testing library, we have added a dummy subgraph inside tests folder.
Tests will live inside that dummy subgraph and you can run them as follows:
```shell
yarn test
```