Reposted by Evangeline Rome 🌵 🦎 🌱 🐢 🐍 🐸
Evangeline Rome 🌵 🦎 🌱 🐢 🐍 🐸
@evadeva.bsky.social
74 followers 221 following 729 posts
Sincere, autistic, empathic, depressed, traumatized, socially anxious, 24 yo human. Effect-pilled. Competent in Backend, DataEng, Frontend, DevOps, and others. I ❤️ OSS! github.com/nikelborm/effect-garden npmx.dev/~evadev
![TypeScript code snippet:
it.effect("reads bytea as Uint8Array", () =>
Effect.gen(function*() {
const sql = yield* PgClient.PgClient
const payload = new Uint8Array([0, 1, 254, 255])
const rows = yield* sql`SELECT ${payload}::bytea AS payload`
assert.instanceOf(rows[0].payload, Uint8Array)
assert.deepStrictEqual(rows, [{ payload }])
})
)](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:uloc6bgqlunyjpqh2odxrqar/bafkreifwx5mbnlqvwiigbxpzpchvqgflww2lu7v4apecfibeprhj4ltiw4)
![Code snippet:
```typescript
import { Payer, Mnemonic, Accept, AcceptsBuilder, Facilitator } from "crosshatch"
import { JPYC, USDC, USDCE } from "crosshatch/coins"
import {
Eip155Address,
Erc3009Scheme,
Permit2Scheme,
Eip155Signer
} from "crosshatch/Eip155"
import { Effect, Layer } from "effect"
import { FetchHttpClient } from "effect/unstable/http"
Effect.gen(function* () {
// Load the recipient address from .env.
const eip155 = yield* Eip155Address.config("PAY_TO_EIP155")
// Build this list of acceptable payments.
const accepts = AcceptsBuilder.empty.pipe(
AcceptsBuilder.add(JPYC, 0.01),
AcceptsBuilder.addUnit([USDC, USDCE], 0.01),
AcceptsBuilder.address({ eip155 }),
)
// Use that accepts list to create a required.
const required = yield* accepts`Description of the charge.`
// Make a payment payload for the requirement.
const payer = yield* Payer.Payer
const payload = yield* payer.make(required)
// Settle the payment payload.
const facilitator = yield* Facilitator.Facilitator
yield* facilitator.settle(payload)
}).pipe(
Effect.provide([
// Provide the payer layer.
Layer.suspend(() => layerPayer),
// Provide the facilitator layer.
Facilitator.layerFromConfig("FACILITATOR_URL").pipe(
Layer.provide(FetchHttpClient.layer)
),
]),
Effect.runFork,
)
// Payer accepts the following in order: USDC, USDCE, JPYC
const layerPayer = Payer.layer(Accept.first([USDC, USDCE, JPYC])).pipe(
Layer.provide(
// Support both EIP155 extact schemes.
Layer.mergeAll(Erc3009Scheme.layer, Permit2Scheme.layer).pipe(
Layer.provide(
// Provide both with a .env-mnemonic-derived signer.
Eip155Signer.layerFromMnemonic.pipe(
Layer.provide(Mnemonic.layerFromConfig("MNEMONIC"))
),
),
),
),
)
```](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:uloc6bgqlunyjpqh2odxrqar/bafkreihvq3zzqirdbke7fa5hitjkapkfja3rjkf2jcoiiabagneeyi6rge)
