pumpdotfun-sdk/dist/esm/globalAccount.js

A simple SDK for interacting with pumpdotfun

import { struct, bool, u64, publicKey } from "@coral-xyz/borsh";
export class GlobalAccount {
    discriminator;
    initialized = false;
    authority;
    feeRecipient;
    initialVirtualTokenReserves;
    initialVirtualSolReserves;
    initialRealTokenReserves;
    tokenTotalSupply;
    feeBasisPoints;
    constructor(discriminator, initialized, authority, feeRecipient, initialVirtualTokenReserves, initialVirtualSolReserves, initialRealTokenReserves, tokenTotalSupply, feeBasisPoints) {
        this.discriminator = discriminator;
        this.initialized = initialized;
        this.authority = authority;
        this.feeRecipient = feeRecipient;
        this.initialVirtualTokenReserves = initialVirtualTokenReserves;
        this.initialVirtualSolReserves = initialVirtualSolReserves;
        this.initialRealTokenReserves = initialRealTokenReserves;
        this.tokenTotalSupply = tokenTotalSupply;
        this.feeBasisPoints = feeBasisPoints;
    }
    getInitialBuyPrice(amount) {
        if (amount <= 0n) {
            return 0n;
        }
        let n = this.initialVirtualSolReserves * this.initialVirtualTokenReserves;
        let i = this.initialVirtualSolReserves + amount;
        let r = n / i + 1n;
        let s = this.initialVirtualTokenReserves - r;
        return s < this.initialRealTokenReserves
            ? s
            : this.initialRealTokenReserves;
    }
    static fromBuffer(buffer) {
        const structure = struct([
            u64("discriminator"),
            bool("initialized"),
            publicKey("authority"),
            publicKey("feeRecipient"),
            u64("initialVirtualTokenReserves"),
            u64("initialVirtualSolReserves"),
            u64("initialRealTokenReserves"),
            u64("tokenTotalSupply"),
            u64("feeBasisPoints"),
        ]);
        let value = structure.decode(buffer);
        return new GlobalAccount(BigInt(value.discriminator), value.initialized, value.authority, value.feeRecipient, BigInt(value.initialVirtualTokenReserves), BigInt(value.initialVirtualSolReserves), BigInt(value.initialRealTokenReserves), BigInt(value.tokenTotalSupply), BigInt(value.feeBasisPoints));
    }
}
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