feat: add generatorLibrary options and allow faker to select

src/index.ts

@@ -5,6 +5,7 @@ import { pascalCase } from 'pascal-case';
 import { upperCase } from 'upper-case';
 import { sentenceCase } from 'sentence-case';
 import a from 'indefinite';
+import { CasualMockValueGenerator } from './mockValueGenerator';
 
 type NamingConvention = 'upper-case#upperCase' | 'pascal-case#pascalCase' | 'keep';
 
@@ -107,19 +108,18 @@ const getNamedType = (opts: Options<NamedTypeNode>): string | number | boolean =
     if (!opts.dynamicValues) casual.seed(hashedString(opts.typeName + opts.fieldName));
     const name = opts.currentType.name.value;
     const casedName = createNameConverter(opts.typenamesConvention, opts.transformUnderscore)(name);
+    const mockValueGenerator = new CasualMockValueGenerator({ dynamicValues: opts.dynamicValues });
     switch (name) {
         case 'String':
-            return opts.dynamicValues ? `casual.word` : `'${casual.word}'`;
+            return mockValueGenerator.word();
         case 'Float':
-            return opts.dynamicValues
-                ? `Math.round(casual.double(0, 10) * 100) / 100`
-                : Math.round(casual.double(0, 10) * 100) / 100;
+            return mockValueGenerator.float();
         case 'ID':
-            return opts.dynamicValues ? `casual.uuid` : `'${casual.uuid}'`;
+            return mockValueGenerator.uuid();
         case 'Boolean':
-            return opts.dynamicValues ? `casual.boolean` : casual.boolean;
+            return mockValueGenerator.boolean();
         case 'Int':
-            return opts.dynamicValues ? `casual.integer(0, 9999)` : casual.integer(0, 9999);
+            return mockValueGenerator.integer();
         default: {
             const foundType = opts.types.find((enumType: TypeItem) => enumType.name === name);
             if (foundType) {
@@ -151,11 +151,9 @@ const getNamedType = (opts: Options<NamedTypeNode>): string | number | boolean =
                         // mapping for this particular scalar
                         if (!customScalar || !customScalar.generator) {
                             if (foundType.name === 'Date') {
-                                return opts.dynamicValues
-                                    ? `new Date(casual.unix_time).toISOString()`
-                                    : `'${new Date(casual.unix_time).toISOString()}'`;
+                                return mockValueGenerator.date();
                             }
-                            return opts.dynamicValues ? `casual.word` : `'${casual.word}'`;
+                            return mockValueGenerator.word();
                         }
 
                         // If there is a mapping to a `casual` type, then use it and make sure

src/mockValueGenerator.ts

@@ -0,0 +1,36 @@
+import casual from 'casual';
+
+interface MockValueGenerator {
+    dynamicValues: boolean;
+    word: () => string;
+    uuid: () => string;
+    boolean: () => boolean | string;
+    integer: () => number | string;
+    float: () => number | string;
+    date: () => string;
+}
+
+type MockValueGeneratorOptions = {
+    dynamicValues: boolean;
+};
+
+export class CasualMockValueGenerator implements MockValueGenerator {
+    dynamicValues: boolean;
+
+    constructor(opts: MockValueGeneratorOptions) {
+        this.dynamicValues = opts.dynamicValues;
+    }
+
+    word = () => (this.dynamicValues ? `casual.word` : `'${casual.word}'`);
+    uuid = () => (this.dynamicValues ? `casual.uuid` : `'${casual.uuid}'`);
+    boolean = () => (this.dynamicValues ? `casual.boolean` : casual.boolean);
+    integer = () => (this.dynamicValues ? `casual.integer(0, 9999)` : `${casual.integer(0, 9999)}`);
+    float = () =>
+        this.dynamicValues
+            ? `Math.round(casual.double(0, 10) * 100) / 100`
+            : `${Math.round(casual.double(0, 10) * 100) / 100}`;
+    date = () =>
+        this.dynamicValues
+            ? `new Date(casual.unix_time).toISOString()`
+            : `'${new Date(casual.unix_time).toISOString()}'`;
+}