Mark schema objects with default values as non-nullable

Partially fixes #584

Author: drwpow

src/transform/schema.ts

@@ -15,10 +15,14 @@ interface TransformSchemaObjOptions extends GlobalContext {
   required: Set<string>;
 }
 
+function hasDefaultValue(node: any): boolean {
+  if (node.hasOwnProperty("default")) return true;
+  // if (node.hasOwnProperty("$ref")) return true; // TODO: resolve remote $refs?
+  return false;
+}
+
 /** Take object keys and convert to TypeScript interface */
 export function transformSchemaObjMap(obj: Record<string, any>, options: TransformSchemaObjOptions): string {
-  const readonly = tsReadonly(options.immutableTypes);
-
   let output = "";
 
   for (const k of Object.keys(obj)) {
@@ -27,7 +31,9 @@ export function transformSchemaObjMap(obj: Record<string, any>, options: Transfo
     if (v.description) output += comment(v.description);
 
     // 2. name (with “?” if optional property)
-    output += `${readonly}"${k}"${options.required.has(k) ? "" : "?"}: `;
+    const readonly = tsReadonly(options.immutableTypes);
+    const required = options.required.has(k) || hasDefaultValue(v.schema || v) ? "" : "?";
+    output += `${readonly}"${k}"${required}: `;
 
     // 3. transform
     output += transformSchemaObj(v.schema || v, options);

src/types.ts

@@ -103,6 +103,7 @@ export interface SchemaObject {
   items?: ReferenceObject | SchemaObject;
   allOf?: SchemaObject;
   properties?: Record<string, ReferenceObject | SchemaObject>;
+  default?: any;
   additionalProperties?: boolean | ReferenceObject | SchemaObject;
   nullable?: boolean; // V3 ONLY
   oneOf?: (ReferenceObject | SchemaObject)[]; // V3 ONLY

tests/bin/expected/prettier-js.ts

@@ -72,7 +72,7 @@ export interface components {
       shipDate?: string
       /** Order Status */
       status?: 'placed' | 'approved' | 'delivered'
-      complete?: boolean
+      complete: boolean
     }
     Category: {
       id?: number

tests/bin/expected/prettier-json.ts

@@ -72,7 +72,7 @@ export interface components {
       shipDate?: string
       /** Order Status */
       status?: 'placed' | 'approved' | 'delivered'
-      complete?: boolean
+      complete: boolean
     }
     Category: {
       id?: number

tests/bin/expected/stdout.ts

@@ -72,7 +72,7 @@ export interface components {
       shipDate?: string;
       /** Order Status */
       status?: "placed" | "approved" | "delivered";
-      complete?: boolean;
+      complete: boolean;
     };
     Category: {
       id?: number;

tests/v2/expected/http.ts

@@ -618,11 +618,11 @@ export interface definitions {
       base_url?: string;
       sso_url?: string;
       version?: "v1";
-      features?: {
+      features: {
         access_code?: boolean;
         sso?: boolean;
         plan_change?: boolean;
-        credential?: "none" | "single" | "multiple" | "unknown";
+        credential: "none" | "single" | "multiple" | "unknown";
       };
     };
     /** An array of platform ids to restrict this product for. */
@@ -662,24 +662,24 @@ export interface definitions {
     name: definitions["Name"];
     type: "boolean" | "string" | "number";
     /** This sets whether or not the feature can be customized by a consumer. */
-    customizable?: boolean;
+    customizable: boolean;
     /**
      * 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.
      */
-    upgradable?: boolean;
+    upgradable: boolean;
     /**
      * 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.
      */
-    downgradable?: boolean;
+    downgradable: boolean;
     /**
      * Sets if this feature’s value is trackable from the provider,
      * this only really affects numeric constraints.
      */
-    measurable?: boolean;
+    measurable: boolean;
     values?: definitions["FeatureValuesList"];
   };
   /**
@@ -699,7 +699,7 @@ export interface definitions {
      * is selected or is default for the plan.
      * Cost is deprecated in favor of the `price.cost` field.
      */
-    cost?: number;
+    cost: number;
     /**
      * Price describes the cost of a feature. It should be preferred over
      * the `cost` property.
@@ -710,13 +710,13 @@ export interface definitions {
        * when this value is selected or is default for the plan.
        * Number features should use the cost range instead.
        */
-      cost?: number;
+      cost: number;
       /**
        * 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.
        */
-      multiply_factor?: number;
+      multiply_factor: number;
       /** Price describes how the feature cost should be calculated. */
       formula?: definitions["PriceFormula"];
       /** Description explains how a feature is calculated to the user. */
@@ -737,9 +737,9 @@ export interface definitions {
      * means this numeric details has no scale, and will not be or customizable.
      * Some plans may not have a measureable or customizable feature.
      */
-    increment?: number;
+    increment: number;
     /** Minimum value that can be set by a user if customizable */
-    min?: number;
+    min: number;
     /** Maximum value that can be set by a user if customizable */
     max?: number;
     /** Applied to the end of the number for display, for example the ‘GB’ in ‘20 GB’. */
@@ -758,7 +758,7 @@ export interface definitions {
      * An integer in 10,000,000ths of cents, will be multiplied by the
      * numeric value set in the feature to determine the cost.
      */
-    cost_multiple?: number;
+    cost_multiple: number;
   };
   FeatureValue: {
     feature: definitions["Label"];
@@ -784,40 +784,40 @@ export interface definitions {
      * When true, everyone can see the product when requested. When false it will
      * not be visible to anyone except those on the provider team.
      */
-    public?: boolean;
+    public: boolean;
     /**
      * When true, the product will be displayed in product listings alongside
      * other products. When false the product will be excluded from listings,
      * 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.
      */
-    listed?: boolean;
+    listed: boolean;
     /**
      * Object to hold various flags for marketing purposes only. These are values
      * that need to be stored, but should not affect decision making in code. If
      * we find ourselves in a position where we think they should, we should
      * consider refactoring our listing definition.
      */
-    marketing?: {
+    marketing: {
       /**
        * 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.
        */
-      beta?: boolean;
+      beta: boolean;
       /**
        * 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.
        */
-      new?: boolean;
+      new: boolean;
       /**
        * 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.
        */
-      featured?: boolean;
+      featured: boolean;
     };
   };
   /**
@@ -858,7 +858,7 @@ export interface definitions {
      * * `multiple`: Multiple credentials are supported at the same time.
      * * `unknown`: The credential type is unknown.
      */
-    credential?: "none" | "single" | "multiple" | "unknown";
+    credential: "none" | "single" | "multiple" | "unknown";
   };
   ProductBody: {
     provider_id: definitions["ID"];

tests/v2/expected/manifold.immutable.ts

@@ -618,11 +618,11 @@ export interface definitions {
       readonly base_url?: string;
       readonly sso_url?: string;
       readonly version?: "v1";
-      readonly features?: {
+      readonly features: {
         readonly access_code?: boolean;
         readonly sso?: boolean;
         readonly plan_change?: boolean;
-        readonly credential?: "none" | "single" | "multiple" | "unknown";
+        readonly credential: "none" | "single" | "multiple" | "unknown";
       };
     };
     /** An array of platform ids to restrict this product for. */
@@ -662,24 +662,24 @@ export interface definitions {
     readonly name: definitions["Name"];
     readonly type: "boolean" | "string" | "number";
     /** This sets whether or not the feature can be customized by a consumer. */
-    readonly customizable?: boolean;
+    readonly customizable: boolean;
     /**
      * 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.
      */
-    readonly upgradable?: boolean;
+    readonly upgradable: boolean;
     /**
      * 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.
      */
-    readonly downgradable?: boolean;
+    readonly downgradable: boolean;
     /**
      * Sets if this feature’s value is trackable from the provider,
      * this only really affects numeric constraints.
      */
-    readonly measurable?: boolean;
+    readonly measurable: boolean;
     readonly values?: definitions["FeatureValuesList"];
   };
   /**
@@ -699,7 +699,7 @@ export interface definitions {
      * is selected or is default for the plan.
      * Cost is deprecated in favor of the `price.cost` field.
      */
-    readonly cost?: number;
+    readonly cost: number;
     /**
      * Price describes the cost of a feature. It should be preferred over
      * the `cost` property.
@@ -710,13 +710,13 @@ export interface definitions {
        * when this value is selected or is default for the plan.
        * Number features should use the cost range instead.
        */
-      readonly cost?: number;
+      readonly cost: number;
       /**
        * 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.
        */
-      readonly multiply_factor?: number;
+      readonly multiply_factor: number;
       /** Price describes how the feature cost should be calculated. */
       readonly formula?: definitions["PriceFormula"];
       /** Description explains how a feature is calculated to the user. */
@@ -737,9 +737,9 @@ export interface definitions {
      * means this numeric details has no scale, and will not be or customizable.
      * Some plans may not have a measureable or customizable feature.
      */
-    readonly increment?: number;
+    readonly increment: number;
     /** Minimum value that can be set by a user if customizable */
-    readonly min?: number;
+    readonly min: number;
     /** Maximum value that can be set by a user if customizable */
     readonly max?: number;
     /** Applied to the end of the number for display, for example the ‘GB’ in ‘20 GB’. */
@@ -758,7 +758,7 @@ export interface definitions {
      * An integer in 10,000,000ths of cents, will be multiplied by the
      * numeric value set in the feature to determine the cost.
      */
-    readonly cost_multiple?: number;
+    readonly cost_multiple: number;
   };
   readonly FeatureValue: {
     readonly feature: definitions["Label"];
@@ -784,40 +784,40 @@ export interface definitions {
      * When true, everyone can see the product when requested. When false it will
      * not be visible to anyone except those on the provider team.
      */
-    readonly public?: boolean;
+    readonly public: boolean;
     /**
      * When true, the product will be displayed in product listings alongside
      * other products. When false the product will be excluded from listings,
      * 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.
      */
-    readonly listed?: boolean;
+    readonly listed: boolean;
     /**
      * Object to hold various flags for marketing purposes only. These are values
      * that need to be stored, but should not affect decision making in code. If
      * we find ourselves in a position where we think they should, we should
      * consider refactoring our listing definition.
      */
-    readonly marketing?: {
+    readonly marketing: {
       /**
        * 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.
        */
-      readonly beta?: boolean;
+      readonly beta: boolean;
       /**
        * 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.
        */
-      readonly new?: boolean;
+      readonly new: boolean;
       /**
        * 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.
        */
-      readonly featured?: boolean;
+      readonly featured: boolean;
     };
   };
   /**
@@ -858,7 +858,7 @@ export interface definitions {
      * * `multiple`: Multiple credentials are supported at the same time.
      * * `unknown`: The credential type is unknown.
      */
-    readonly credential?: "none" | "single" | "multiple" | "unknown";
+    readonly credential: "none" | "single" | "multiple" | "unknown";
   };
   readonly ProductBody: {
     readonly provider_id: definitions["ID"];