feat: export raw validator function as isTypeName(value): value is TypeName (#22)

Author: tomohisaota

src/__tests__/build-parameters.test.ts

@@ -4,6 +4,8 @@ import {exec as execCB, ExecOptions} from 'child_process';
 import * as path from 'path';
 import {promisify} from 'util';
 
+jest.setTimeout(30000);
+
 const rimraf = promisify(rimrafCB);
 
 const testDir = path.join(__dirname, 'build-parameters');

src/template.ts

@@ -62,18 +62,19 @@ export const compileSchema = (schemaName: string, typeName: string) =>
 export const validateFn = (
   typeName: string,
   schemaName: string,
-) => `const rawValidate${typeName} = ${compileSchema(schemaName, typeName)};
+) => `export const is${typeName} = ${compileSchema(schemaName, typeName)};
 export default function validate(value: unknown): ${typeName} {
-  if (rawValidate${typeName}(value)) {
+  if (is${typeName}(value)) {
     return value;
   } else {
     throw new Error(
-      ajv.errorsText(rawValidate${typeName}.errors!.filter((e: any) => e.keyword !== 'if'), {dataVar: '${typeName}'}) +
+      ajv.errorsText(is${typeName}.errors!.filter((e: any) => e.keyword !== 'if'), {dataVar: '${typeName}'}) +
       '\\n\\n' +
       inspect(value),
     );
   }
-}`;
+}
+`;
 
 function typeOf(typeName: string, property: string, schema: TJS.Definition) {
   if (schema.definitions && schema.definitions[typeName]) {