cosmic-proto without cosmjs (#9691)

refs: #9408

## Description
cosmjs deps add a lot of size and complicates our builds (#9583) At runtime we only need `Decimal` so this vendors that (just the subset necessary) and drops all other runtime deps.

### Security Considerations
less supply chain

### Scaling Considerations
none

### Documentation Considerations
Maybe get this upstream to reduce maintenance.

### Testing Considerations
CI suffices?

### Upgrade Considerations
None, not on chain.

packages/cosmic-proto/package.json

@@ -142,11 +142,6 @@
     "typescript": "^5.5.3"
   },
   "dependencies": {
-    "@cosmjs/amino": "^0.32.3",
-    "@cosmjs/math": "^0.32.3",
-    "@cosmjs/proto-signing": "^0.32.3",
-    "@cosmjs/stargate": "^0.32.3",
-    "@cosmjs/tendermint-rpc": "^0.32.3",
     "@endo/base64": "^1.0.5",
     "@endo/init": "^1.1.2"
   },

packages/cosmic-proto/src/codegen/agoric/vbank/vbank.ts

@@ -1,8 +1,7 @@
 //@ts-nocheck
 import { Coin, CoinSDKType } from '../../cosmos/base/v1beta1/coin.js';
 import { BinaryReader, BinaryWriter } from '../../binary.js';
-import { Decimal } from '@cosmjs/math';
-import { isSet } from '../../helpers.js';
+import { Decimal, isSet } from '../../helpers.js';
 import { JsonSafe } from '../../json-safe.js';
 /** The module governance/configuration parameters. */
 export interface Params {

packages/cosmic-proto/src/codegen/cosmos/distribution/v1beta1/distribution.ts

@@ -6,8 +6,7 @@ import {
   CoinSDKType,
 } from '../../base/v1beta1/coin.js';
 import { BinaryReader, BinaryWriter } from '../../../binary.js';
-import { Decimal } from '@cosmjs/math';
-import { isSet } from '../../../helpers.js';
+import { Decimal, isSet } from '../../../helpers.js';
 import { JsonSafe } from '../../../json-safe.js';
 /** Params defines the set of params for the distribution module. */
 export interface Params {

packages/cosmic-proto/src/codegen/cosmos/gov/v1beta1/gov.ts

@@ -10,8 +10,8 @@ import {
   DurationSDKType,
 } from '../../../google/protobuf/duration.js';
 import { BinaryReader, BinaryWriter } from '../../../binary.js';
-import { Decimal } from '@cosmjs/math';
 import {
+  Decimal,
   isSet,
   fromJsonTimestamp,
   fromTimestamp,

packages/cosmic-proto/src/codegen/cosmos/mint/v1beta1/mint.ts

@@ -1,7 +1,6 @@
 //@ts-nocheck
 import { BinaryReader, BinaryWriter } from '../../../binary.js';
-import { Decimal } from '@cosmjs/math';
-import { isSet } from '../../../helpers.js';
+import { Decimal, isSet } from '../../../helpers.js';
 import { JsonSafe } from '../../../json-safe.js';
 /** Minter represents the minting state. */
 export interface Minter {

packages/cosmic-proto/src/codegen/cosmos/staking/v1beta1/staking.ts

@@ -11,9 +11,13 @@ import {
 } from '../../../google/protobuf/duration.js';
 import { Coin, CoinSDKType } from '../../base/v1beta1/coin.js';
 import { BinaryReader, BinaryWriter } from '../../../binary.js';
-import { isSet, fromJsonTimestamp, fromTimestamp } from '../../../helpers.js';
+import {
+  isSet,
+  Decimal,
+  fromJsonTimestamp,
+  fromTimestamp,
+} from '../../../helpers.js';
 import { JsonSafe } from '../../../json-safe.js';
-import { Decimal } from '@cosmjs/math';
 /** BondStatus is the status of a validator. */
 export enum BondStatus {
   /** BOND_STATUS_UNSPECIFIED - UNSPECIFIED defines an invalid validator status. */

packages/cosmic-proto/src/codegen/cosmos/staking/v1beta1/tx.ts

@@ -12,9 +12,13 @@ import {
   TimestampSDKType,
 } from '../../../google/protobuf/timestamp.js';
 import { BinaryReader, BinaryWriter } from '../../../binary.js';
-import { isSet, fromJsonTimestamp, fromTimestamp } from '../../../helpers.js';
+import {
+  isSet,
+  Decimal,
+  fromJsonTimestamp,
+  fromTimestamp,
+} from '../../../helpers.js';
 import { JsonSafe } from '../../../json-safe.js';
-import { Decimal } from '@cosmjs/math';
 /** MsgCreateValidator defines a SDK message for creating a new validator. */
 export interface MsgCreateValidator {
   description: Description;

packages/cosmic-proto/src/codegen/helpers.ts

@@ -222,3 +222,84 @@ export function fromJsonTimestamp(o: any): Timestamp {
 function numberToLong(number: number) {
   return BigInt(Math.trunc(number));
 }
+
+// The largest value we need is 18 (Ether).
+const maxFractionalDigits = 30;
+// Subset of Decimal in @cosmjs/math
+/**
+ * A type for arbitrary precision, non-negative decimals.
+ *
+ * Instances of this class are immutable.
+ */
+export class Decimal {
+  public static fromUserInput(
+    input: string,
+    fractionalDigits: number,
+  ): Decimal {
+    Decimal.verifyFractionalDigits(fractionalDigits);
+
+    const badCharacter = input.match(/[^0-9.]/);
+    if (badCharacter) {
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      throw new Error(
+        `Invalid character at position ${badCharacter.index! + 1}`,
+      );
+    }
+
+    let whole: string;
+    let fractional: string;
+
+    if (input === '') {
+      whole = '0';
+      fractional = '';
+    } else if (input.search(/./) === -1) {
+      // integer format, no separator
+      whole = input;
+      fractional = '';
+    } else {
+      const parts = input.split('.');
+      switch (parts.length) {
+        case 0:
+        case 1:
+          throw new Error(
+            'Fewer than two elements in split result. This must not happen here.',
+          );
+        case 2:
+          if (!parts[1]) throw new Error('Fractional part missing');
+          whole = parts[0];
+          fractional = parts[1].replace(/0+$/, '');
+          break;
+        default:
+          throw new Error('More than one separator found');
+      }
+    }
+
+    if (fractional.length > fractionalDigits) {
+      throw new Error('Got more fractional digits than supported');
+    }
+
+    const quantity = `${whole}${fractional.padEnd(fractionalDigits, '0')}`;
+
+    return new Decimal(quantity, fractionalDigits);
+  }
+
+  public static fromAtomics(
+    atomics: string,
+    fractionalDigits: number,
+  ): Decimal {
+    Decimal.verifyFractionalDigits(fractionalDigits);
+    return new Decimal(atomics, fractionalDigits);
+  }
+
+  private static verifyFractionalDigits(fractionalDigits: number): void {
+    if (!Number.isInteger(fractionalDigits))
+      throw new Error('Fractional digits is not an integer');
+    if (fractionalDigits < 0)
+      throw new Error('Fractional digits must not be negative');
+    if (fractionalDigits > maxFractionalDigits) {
+      throw new Error(
+        `Fractional digits must not exceed ${maxFractionalDigits}`,
+      );
+    }
+  }
+}