fix(types): properly augment ethers BigNumber

Rubilmax · Oct 13, 2022 · cae96b4 · cae96b4
1 parent 0649637
commit cae96b4
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Showing 3 changed files with 15 additions and 6 deletions.
diff --git a/package.json b/package.json
@@ -7,7 +7,7 @@
     "lib/*"
   ],
   "scripts": {
-    "build": "tsc",
+    "build": "tsc --build tsconfig.build.json",
     "clean": "rm -rf ./lib/",
     "cm": "cz",
     "lint": "eslint ./src --fix",

diff --git a/src/index.ts b/src/index.ts
@@ -16,7 +16,7 @@ const RAY_PERCENT_RATIO = RAY.div(PERCENT);
 const HALF_RAY_PERCENT_RATIO = RAY_PERCENT_RATIO.div(2);
 
 declare module "ethers" {
-  class BigNumber {
+  interface BigNumber {
     min: (other: BigNumberish) => BigNumber;
     max: (other: BigNumberish) => BigNumber;
     sum: (others: BigNumberish[]) => BigNumber;
@@ -50,11 +50,13 @@ declare module "ethers" {
     rayToPercent: () => BigNumber;
     rayToWad: () => BigNumber;
     formatWad: () => string;
+  }
 
-    static pow10: (power: BigNumberish) => BigNumber;
-    static parsePercent: (value: string) => BigNumber;
-    static parseWad: (value: string) => BigNumber;
-    static parseRay: (value: string) => BigNumber;
+  namespace BigNumber {
+    let pow10: (power: BigNumberish) => BigNumber;
+    let parsePercent: (value: string) => BigNumber;
+    let parseWad: (value: string) => BigNumber;
+    let parseRay: (value: string) => BigNumber;
   }
 }
 

diff --git a/tsconfig.build.json b/tsconfig.build.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "src"
+  },
+  "include": ["src"]
+}