stargate: Copy fee types/functions from launchpad

packages/stargate/src/fee.spec.ts

@@ -0,0 +1,23 @@
+import { Decimal } from "@cosmjs/math";
+
+import { GasPrice } from "./fee";
+
+describe("GasPrice", () => {
+  it("can be constructed", () => {
+    const inputs = ["3.14", "3", "0.14"];
+    inputs.forEach((input) => {
+      const gasPrice = new GasPrice(Decimal.fromUserInput(input, 18), "utest");
+      expect(gasPrice.amount.toString()).toEqual(input);
+      expect(gasPrice.denom).toEqual("utest");
+    });
+  });
+
+  it("can be constructed from a config string", () => {
+    const inputs = ["3.14", "3", "0.14"];
+    inputs.forEach((input) => {
+      const gasPrice = GasPrice.fromString(`${input}utest`);
+      expect(gasPrice.amount.toString()).toEqual(input);
+      expect(gasPrice.denom).toEqual("utest");
+    });
+  });
+});

packages/stargate/src/fee.ts

@@ -0,0 +1,77 @@
+import { Decimal, Uint53 } from "@cosmjs/math";
+import { Coin, coins } from "@cosmjs/proto-signing";
+
+/**
+ * This is the same as StdFee from @cosmjs/launchpad but those might diverge in the future.
+ */
+export interface StdFee {
+  readonly amount: readonly Coin[];
+  readonly gas: string;
+}
+
+/**
+ * This is the same as FeeTable from @cosmjs/launchpad but those might diverge in the future.
+ */
+export type FeeTable = Record<string, StdFee>;
+
+/**
+ * This is the same as GasPrice from @cosmjs/launchpad but those might diverge in the future.
+ */
+export class GasPrice {
+  public readonly amount: Decimal;
+  public readonly denom: string;
+
+  public constructor(amount: Decimal, denom: string) {
+    this.amount = amount;
+    this.denom = denom;
+  }
+
+  public static fromString(gasPrice: string): GasPrice {
+    const matchResult = gasPrice.match(/^(?<amount>.+?)(?<denom>[a-z]+)$/);
+    if (!matchResult) {
+      throw new Error("Invalid gas price string");
+    }
+    const { amount, denom } = matchResult.groups as { readonly amount: string; readonly denom: string };
+    if (denom.length < 3 || denom.length > 127) {
+      throw new Error("Gas price denomination must be between 3 and 127 characters");
+    }
+    const fractionalDigits = 18;
+    const decimalAmount = Decimal.fromUserInput(amount, fractionalDigits);
+    return new GasPrice(decimalAmount, denom);
+  }
+}
+
+/**
+ * This is the same as GasLimits from @cosmjs/launchpad but those might diverge in the future.
+ */
+export type GasLimits<T extends Record<string, StdFee>> = {
+  readonly [key in keyof T]: number;
+};
+
+/**
+ * This is the same as calculateFee from @cosmjs/launchpad but those might diverge in the future.
+ */
+function calculateFee(gasLimit: number, { denom, amount: gasPriceAmount }: GasPrice): StdFee {
+  const amount = Math.ceil(gasPriceAmount.multiply(new Uint53(gasLimit)).toFloatApproximation());
+  return {
+    amount: coins(amount, denom),
+    gas: gasLimit.toString(),
+  };
+}
+
+/**
+ * This is the same as buildFeeTable from @cosmjs/launchpad but those might diverge in the future.
+ */
+export function buildFeeTable<T extends Record<string, StdFee>>(
+  gasPrice: GasPrice,
+  defaultGasLimits: GasLimits<T>,
+  gasLimits: Partial<GasLimits<T>>,
+): T {
+  return Object.entries(defaultGasLimits).reduce(
+    (feeTable, [type, defaultGasLimit]) => ({
+      ...feeTable,
+      [type]: calculateFee(gasLimits[type] || defaultGasLimit, gasPrice),
+    }),
+    {} as T,
+  );
+}

packages/stargate/src/index.ts

@@ -2,6 +2,7 @@ export { Coin, coin, coins, parseCoins } from "@cosmjs/proto-signing";
 
 export { Account, accountFromAny } from "./accounts";
 export { AminoConverter, AminoTypes } from "./aminotypes";
+export { buildFeeTable, FeeTable, GasLimits, GasPrice, StdFee } from "./fee";
 export * as logs from "./logs";
 export {
   AuthExtension,

packages/stargate/src/signingstargateclient.spec.ts

@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/naming-convention,no-bitwise */
-import { GasPrice, MsgDelegate as LaunchpadMsgDelegate, Secp256k1HdWallet } from "@cosmjs/launchpad";
+import { MsgDelegate as LaunchpadMsgDelegate, Secp256k1HdWallet } from "@cosmjs/launchpad";
 import { coin, coins, DirectSecp256k1HdWallet, Registry } from "@cosmjs/proto-signing";
 import { assert, sleep } from "@cosmjs/utils";
 import protobuf from "protobufjs/minimal";
@@ -9,6 +9,7 @@ import { MsgSend } from "./codec/cosmos/bank/v1beta1/tx";
 import { Coin } from "./codec/cosmos/base/v1beta1/coin";
 import { DeepPartial, MsgDelegate } from "./codec/cosmos/staking/v1beta1/tx";
 import { Tx } from "./codec/cosmos/tx/v1beta1/tx";
+import { GasPrice } from "./fee";
 import { PrivateSigningStargateClient, SigningStargateClient } from "./signingstargateclient";
 import { assertIsBroadcastTxSuccess } from "./stargateclient";
 import {

packages/stargate/src/signingstargateclient.ts

@@ -1,13 +1,6 @@
 import { encodeSecp256k1Pubkey } from "@cosmjs/amino";
 import { fromBase64 } from "@cosmjs/encoding";
-import {
-  buildFeeTable,
-  CosmosFeeTable,
-  GasLimits,
-  GasPrice,
-  makeSignDoc as makeSignDocAmino,
-  StdFee,
-} from "@cosmjs/launchpad";
+import { CosmosFeeTable, makeSignDoc as makeSignDocAmino } from "@cosmjs/launchpad";
 import { Int53 } from "@cosmjs/math";
 import {
   EncodeObject,
@@ -63,6 +56,7 @@ import {
   MsgConnectionOpenInit,
   MsgConnectionOpenTry,
 } from "./codec/ibc/core/connection/v1/tx";
+import { buildFeeTable, GasLimits, GasPrice, StdFee } from "./fee";
 import { BroadcastTxResponse, StargateClient } from "./stargateclient";
 
 const defaultGasPrice = GasPrice.fromString("0.025ucosm");