From 6de4a5d8a9d114c4c33c58f8a304b60e7370eeff Mon Sep 17 00:00:00 2001
From: Richard Moore <github@ricmoo.com>
Date: Sat, 27 Jul 2019 18:51:39 -0300
Subject: [PATCH] Added TypeScript tool support for functions with multiple
 outputs.

---
 packages/cli/src.ts/typescript.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/packages/cli/src.ts/typescript.ts b/packages/cli/src.ts/typescript.ts
index 4fc16f847..c2615aca9 100644
--- a/packages/cli/src.ts/typescript.ts
+++ b/packages/cli/src.ts/typescript.ts
@@ -9,6 +9,8 @@ function getType(param: ethers.utils.ParamType, flexible?: boolean): string {
 
     if (param.type === "address" || param.type === "string") { return "string"; }
 
+    if (param.type === "bool") { return "boolean" }
+
     if (param.type.substring(0, 5) === "bytes") {
         if (flexible) {
             return "string | ethers.utils.BytesLike";
@@ -76,7 +78,15 @@ export function generate(contract: ContractCode, bytecode?: string): string {
             if (fragment.outputs.length === 1) {
                 output = "Promise<" + getType(fragment.outputs[0]) + ">";
             } else {
-                throw new Error('not implemented yet');
+                // If all output parameters are names, we can specify the struct
+                if (fragment.outputs.filter((o) => (!!o.name)).length === fragment.outputs.length) {
+                    output = "Promise<{ " + fragment.outputs.map((o, i) =>
+                        ((o.name || ("arg" + String(i)))+ ": " + getType(o))
+                    ).join(", ") + " }>";
+                } else {
+                    // Otherwise, all we know is that it will be an Array
+                    output = "Promise<{ Array<any> }>"
+                }
             }
         }