fix: upgrade to latest typescript

Author: G-Rath

src/commands/ajv.ts

@@ -86,9 +86,11 @@ export default function (argv: ParsedArgs): AjvCore {
       registerer = require("ts-node").register()
     } catch (err) {
       /* istanbul ignore next */
-      if (err.code === "MODULE_NOT_FOUND") {
+      if ((err as {code?: string; message: string}).code === "MODULE_NOT_FOUND") {
         throw new Error(
-          `'ts-node' is required for the TypeScript configuration files. Make sure it is installed\nError: ${err.message}`
+          `'ts-node' is required for the TypeScript configuration files. Make sure it is installed\nError: ${
+            (err as Error).message
+          }`
         )
       }
 

src/commands/util.ts

@@ -52,7 +52,7 @@ export function openFile(filename: string, suffix: string): any {
       json = require(file)
     }
   } catch (err) {
-    const msg: string = err.message
+    const msg: string = (err as Error).message
     console.error(`error:  ${msg.replace(" module", " " + suffix)}`)
     process.exit(2)
   }
@@ -82,7 +82,7 @@ export function compile(ajv: Ajv, schemaFile: string): AnyValidateFunction {
     return ajv.compile(schema)
   } catch (err) {
     console.error(`schema ${schemaFile} is invalid`)
-    console.error(`error: ${err.message}`)
+    console.error(`error: ${(err as Error).message}`)
     process.exit(1)
   }
 }