fix: Serialize falsey values

src/index.ts

@@ -1,5 +1,6 @@
 import type { GlobalContext, OpenAPI2, OpenAPI3, SchemaObject, SwaggerToTSOptions } from "./types.js";
 import path from "path";
+import fs from "fs";
 import prettier from "prettier";
 import parserTypescript from "prettier/parser-typescript.js";
 import { Readable } from "stream";
@@ -115,7 +116,9 @@ async function openapiTS(
   };
   if (options && options.prettierConfig) {
     try {
-      const userOptions = await prettier.resolveConfig(path.resolve(process.cwd(), options.prettierConfig));
+      const prettierConfigFile = path.resolve(process.cwd(), options.prettierConfig);
+      await fs.promises.access(prettierConfigFile, fs.constants.F_OK);
+      const userOptions = await prettier.resolveConfig(prettierConfigFile);
       prettierOptions = {
         ...(userOptions || {}),
         ...prettierOptions,

src/utils.ts

@@ -42,7 +42,14 @@ export function prepareComment(v: CommentObject): string | void {
   const supportedJsDocTags: Array<keyof CommentObject> = ["description", "default", "example"];
   for (let index = 0; index < supportedJsDocTags.length; index++) {
     const field = supportedJsDocTags[index];
-    if (v[field]) commentsArray.push(`@${field} ${v[field]} `);
+    const allowEmptyString = field === "default" || field === "example";
+    if (v[field] === undefined) {
+      continue;
+    }
+    if (v[field] === "" && !allowEmptyString) {
+      continue;
+    }
+    commentsArray.push(`@${field} ${v[field]} `);
   }
 
   // * JSDOC 'Constant' without value

test/bin/cli.test.js

@@ -20,14 +20,20 @@ describe("cli", () => {
   });
 
   it("--prettier-config (.js)", async () => {
-    execSync(`${cmd} specs/petstore.yaml -o generated/prettier-js.ts --prettier-config fixtures/prettier.config.js`, {
+    execSync(`${cmd} specs/petstore.yaml -o generated/prettier-js.ts --prettier-config fixtures/prettier.config.cjs`, {
       cwd,
     });
     const generated = fs.readFileSync(new URL("./generated/prettier-js.ts", cwd), "utf8");
     const expected = eol.lf(fs.readFileSync(new URL("./expected/prettier-js.ts", cwd), "utf8"));
     expect(generated).to.equal(expected);
   });
 
+  it("--prettier-config (missing)", async () => {
+    expect(() => {
+      execSync(`${cmd} specs/petstore.yaml -o generated/prettier-missing.ts --prettier-config NO_SUCH_FILE`);
+    }).to.throw('NO_SUCH_FILE');
+  });
+
   it("stdout", async () => {
     const generated = execSync(`${cmd} specs/petstore.yaml`, { cwd });
     const expected = eol.lf(fs.readFileSync(new URL("./expected/stdout.ts", cwd), "utf8"));

test/bin/expected/paths-enum.ts

@@ -79,6 +79,7 @@ export interface components {
        * @enum {string}
        */
       status?: "placed" | "approved" | "delivered";
+      /** @default false */
       complete?: boolean;
     };
     Category: {

test/bin/expected/prettier-js.ts

@@ -79,6 +79,7 @@ export interface components {
        * @enum {string}
        */
       status?: 'placed' | 'approved' | 'delivered'
+      /** @default false */
       complete?: boolean
     }
     Category: {

test/bin/expected/prettier-json.ts

@@ -79,6 +79,7 @@ export interface components {
        * @enum {string}
        */
       status?: 'placed' | 'approved' | 'delivered'
+      /** @default false */
       complete?: boolean
     }
     Category: {

test/bin/expected/specs/manifold.ts

@@ -688,23 +688,32 @@ export interface definitions {
     name: definitions["Name"];
     /** @enum {string} */
     type: "boolean" | "string" | "number";
-    /** @description This sets whether or not the feature can be customized by a consumer. */
+    /**
+     * @description This sets whether or not the feature can be customized by a consumer.
+     * @default false
+     */
     customizable?: boolean;
     /**
      * @description This sets whether or not the feature can be upgraded by the consumer after the
      * resource has provisioned. Upgrading means setting a higher value or selecting a
      * higher element in the list.
+     *
+     * @default false
      */
     upgradable?: boolean;
     /**
      * @description This sets whether or not the feature can be downgraded by the consumer after the
      * resource has provisioned. Downgrading means setting a lower value or selecting a
      * lower element in the list.
+     *
+     * @default false
      */
     downgradable?: boolean;
     /**
      * @description Sets if this feature’s value is trackable from the provider,
      * this only really affects numeric constraints.
+     *
+     * @default false
      */
     measurable?: boolean;
     values?: definitions["FeatureValuesList"];
@@ -725,6 +734,8 @@ export interface definitions {
      * @description The cost that will be added to the monthly plan cost when this value
      * is selected or is default for the plan.
      * Cost is deprecated in favor of the `price.cost` field.
+     *
+     * @default 0
      */
     cost?: number;
     /**
@@ -736,12 +747,16 @@ export interface definitions {
        * @description Cost is the price in cents that will be added to plan's base cost
        * when this value is selected or is default for the plan.
        * Number features should use the cost range instead.
+       *
+       * @default 0
        */
       cost?: number;
       /**
        * @description When a feature is used to multiply the cost of the plan or of
        * another feature, multiply factor is used for calculation.
        * A feature cannot have both a cost and a multiply factor.
+       *
+       * @default 0
        */
       multiply_factor?: number;
       /**
@@ -771,7 +786,10 @@ export interface definitions {
      * @default 1
      */
     increment?: number;
-    /** @description Minimum value that can be set by a user if customizable */
+    /**
+     * @description Minimum value that can be set by a user if customizable
+     * @default 0
+     */
     min?: number;
     /** @description Maximum value that can be set by a user if customizable */
     max?: number;
@@ -790,6 +808,8 @@ export interface definitions {
     /**
      * @description An integer in 10,000,000ths of cents, will be multiplied by the
      * numeric value set in the feature to determine the cost.
+     *
+     * @default 0
      */
     cost_multiple?: number;
   };
@@ -819,6 +839,8 @@ export interface definitions {
     /**
      * @description When true, everyone can see the product when requested. When false it will
      * not be visible to anyone except those on the provider team.
+     *
+     * @default false
      */
     public?: boolean;
     /**
@@ -827,6 +849,8 @@ export interface definitions {
      * but can still be provisioned directly if it's label is known.
      * Any pages that display information about the product when not listed,
      * should indicate to webcrawlers that the content should not be indexed.
+     *
+     * @default false
      */
     listed?: boolean;
     /**
@@ -842,18 +866,24 @@ export interface definitions {
        * @description Indicates whether or not the product is in `Beta` and should be
        * advertised as such. This does not have any impact on who can access the
        * product, it is just used to inform consumers through our clients.
+       *
+       * @default false
        */
       beta?: boolean;
       /**
        * @description Indicates whether or not the product is in `New` and should be
        * advertised as such. This does not have any impact on who can access the
        * product, it is just used to inform consumers through our clients.
+       *
+       * @default false
        */
       new?: boolean;
       /**
        * @description Indicates whether or not the product is in `New` and should be
        * advertised as such. This does not have any impact on who can access the
        * product, it is just used to inform consumers through our clients.
+       *
+       * @default false
        */
       featured?: boolean;
     };

test/bin/expected/specs/petstore.ts

@@ -79,6 +79,7 @@ export interface components {
        * @enum {string}
        */
       status?: "placed" | "approved" | "delivered";
+      /** @default false */
       complete?: boolean;
     };
     Category: {

test/bin/expected/stdin.ts

@@ -79,6 +79,7 @@ export interface components {
        * @enum {string}
        */
       status?: "placed" | "approved" | "delivered";
+      /** @default false */
       complete?: boolean;
     };
     Category: {

test/bin/expected/stdout.ts

@@ -79,6 +79,7 @@ export interface components {
        * @enum {string}
        */
       status?: "placed" | "approved" | "delivered";
+      /** @default false */
       complete?: boolean;
     };
     Category: {

test/opts/expected/remote-schema.ts

@@ -93,6 +93,7 @@ export interface external {
            * @enum {string}
            */
           status?: "placed" | "approved" | "delivered";
+          /** @default false */
           complete?: boolean;
         };
         Category: {

test/v2/expected/falsey-example.additional.ts

@@ -0,0 +1,38 @@
+/**
+ * This file was auto-generated by openapi-typescript.
+ * Do not make direct changes to the file.
+ */
+
+export interface paths {
+  '/test': {
+    get: {
+      parameters: {
+        query: {
+          search: string
+        }
+      }
+      responses: {
+        200: unknown
+      }
+    }
+  }
+}
+
+export interface definitions {
+  TestSchema: {
+    /**
+     * @default false
+     * @example false
+     */
+    isEnabled?: boolean
+    /**
+     * @default 0
+     * @example 0
+     */
+    count?: number
+  }
+}
+
+export interface operations {}
+
+export interface external {}

test/v2/expected/falsey-example.exported-type.ts

@@ -0,0 +1,38 @@
+/**
+ * This file was auto-generated by openapi-typescript.
+ * Do not make direct changes to the file.
+ */
+
+export type paths = {
+  '/test': {
+    get: {
+      parameters: {
+        query: {
+          search: string
+        }
+      }
+      responses: {
+        200: unknown
+      }
+    }
+  }
+}
+
+export type definitions = {
+  TestSchema: {
+    /**
+     * @default false
+     * @example false
+     */
+    isEnabled?: boolean
+    /**
+     * @default 0
+     * @example 0
+     */
+    count?: number
+  }
+}
+
+export type operations = {}
+
+export type external = {}

test/v2/expected/falsey-example.immutable.ts

@@ -0,0 +1,38 @@
+/**
+ * This file was auto-generated by openapi-typescript.
+ * Do not make direct changes to the file.
+ */
+
+export interface paths {
+  readonly '/test': {
+    readonly get: {
+      readonly parameters: {
+        readonly query: {
+          readonly search: string
+        }
+      }
+      readonly responses: {
+        readonly 200: unknown
+      }
+    }
+  }
+}
+
+export interface definitions {
+  readonly TestSchema: {
+    /**
+     * @default false
+     * @example false
+     */
+    readonly isEnabled?: boolean
+    /**
+     * @default 0
+     * @example 0
+     */
+    readonly count?: number
+  }
+}
+
+export interface operations {}
+
+export interface external {}

test/v2/expected/falsey-example.support-array-length.ts

@@ -0,0 +1,38 @@
+/**
+ * This file was auto-generated by openapi-typescript.
+ * Do not make direct changes to the file.
+ */
+
+export interface paths {
+  '/test': {
+    get: {
+      parameters: {
+        query: {
+          search: string
+        }
+      }
+      responses: {
+        200: unknown
+      }
+    }
+  }
+}
+
+export interface definitions {
+  TestSchema: {
+    /**
+     * @default false
+     * @example false
+     */
+    isEnabled?: boolean
+    /**
+     * @default 0
+     * @example 0
+     */
+    count?: number
+  }
+}
+
+export interface operations {}
+
+export interface external {}