@contractkit/plugin-typescript - npm Package Compare versions

Comparing version 0.23.1 to 0.24.0

.turbo/turbo-build$colon$ci.log

 
-> @contractkit/plugin-typescript@0.23.1 build:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
+> @contractkit/plugin-typescript@0.24.0 build:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
 > eslint --max-warnings=0 && pnpm run build
 
 
-> @contractkit/plugin-typescript@0.23.1 build /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
+> @contractkit/plugin-typescript@0.24.0 build /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
 > tsup src/index.ts --format esm --sourcemap --dts && tsc --emitDeclarationOnly --declaration
@@ -14,7 +14,7 @@
 ESM Build start
-ESM dist/index.js     149.66 KB
-ESM dist/index.js.map 326.35 KB
-ESM ⚡️ Build success in 367ms
+ESM dist/index.js     149.94 KB
+ESM dist/index.js.map 327.56 KB
+ESM ⚡️ Build success in 339ms
 DTS Build start
-DTS ⚡️ Build success in 6065ms
+DTS ⚡️ Build success in 4724ms
 DTS dist/index.d.ts 1.82 KB

.turbo/turbo-test$colon$ci.log

 
-> @contractkit/plugin-typescript@0.23.1 test:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
+> @contractkit/plugin-typescript@0.24.0 test:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
 > vitest run --coverage
@@ -9,13 +9,13 @@
 
- ✓ tests/codegen-contract.test.ts (125 tests) 78ms
- ✓ tests/codegen-sdk.test.ts (132 tests) 128ms
- ✓ tests/codegen-operation.test.ts (88 tests) 109ms
- ✓ tests/codegen-plain-types.test.ts (61 tests) 62ms
- ✓ tests/codegen-server.test.ts (19 tests) 88ms
- ✓ tests/pipeline.test.ts (25 tests) 277ms
+ ✓ tests/codegen-operation.test.ts (88 tests) 104ms
+ ✓ tests/codegen-contract.test.ts (127 tests) 116ms
+ ✓ tests/codegen-sdk.test.ts (132 tests) 134ms
+ ✓ tests/codegen-plain-types.test.ts (61 tests) 34ms
+ ✓ tests/pipeline.test.ts (25 tests) 149ms
+ ✓ tests/codegen-server.test.ts (19 tests) 31ms
 
  Test Files  6 passed (6)
-      Tests  450 passed (450)
-   Start at  14:28:27
-   Duration  6.25s (transform 3.59s, setup 0ms, import 11.84s, tests 741ms, environment 3ms)
+      Tests  452 passed (452)
+   Start at  15:00:19
+   Duration  5.63s (transform 3.00s, setup 0ms, import 10.57s, tests 567ms, environment 4ms)
 
@@ -26,5 +26,5 @@  % Coverage report from v8
 -------------------|---------|----------|---------|---------|-------------------
-All files          |   79.97 |    75.13 |    83.5 |   82.58 |                   
- src               |   79.75 |    74.81 |   83.06 |   82.34 |                   
-  ...n-contract.ts |   87.85 |     82.2 |   90.08 |   88.98 | ...1070,1075-1076 
+All files          |      80 |    75.28 |    83.5 |   82.61 |                   
+ src               |   79.79 |    74.96 |   83.06 |   82.37 |                   
+  ...n-contract.ts |   87.92 |     82.7 |   90.08 |   89.06 | ...1085,1090-1091 
   ...-operation.ts |   78.13 |    74.26 |   77.77 |   79.69 | ...69-680,685-686 
@@ -31,0 +31,0 @@ ...lain-types.ts |   89.08 |    78.37 |   96.66 |    92.3 | ...31,243,249,301

CHANGELOG.md

 # @contractkit/contractkit-plugin-typescript
 
+## 0.24.0
+
+### Minor Changes
+
+- 27521cc: Preserve the optional-field modality through `format(input=...)` / `format(output=...)` transforms. Optional fields are now emitted with a conditional spread (`...(data.x !== undefined ? { k: data.x } : {})` for output, `... != null` for input) so the inferred `z.input` / `z.output` type widens the property to `k?: T` instead of required-nullable `k: T | undefined`. Consumer code that constructs values with `...(x ? { k: x } : {})` is now assignable to the schema's inferred type. Runtime wire output is unchanged.
+
 ## 0.23.1
@@ -4,0 +10,0 @@

coverage/index.html

@@ -26,5 +26,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">79.97% </span>
+                <span class="strong">80% </span>
                 <span class="quiet">Statements</span>
-                <span class='fraction'>2029/2537</span>
+                <span class='fraction'>2033/2541</span>
             </div>
@@ -34,5 +34,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">75.13% </span>
+                <span class="strong">75.28% </span>
                 <span class="quiet">Branches</span>
-                <span class='fraction'>1230/1637</span>
+                <span class='fraction'>1234/1639</span>
             </div>
@@ -49,5 +49,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">82.58% </span>
+                <span class="strong">82.61% </span>
                 <span class="quiet">Lines</span>
-                <span class='fraction'>1778/2153</span>
+                <span class='fraction'>1782/2157</span>
             </div>
@@ -67,3 +67,3 @@
     </div>
-    <div class='status-line medium'></div>
+    <div class='status-line high'></div>
     <div class="pad1">
@@ -87,13 +87,13 @@ <table class="coverage-summary">
 	<td class="file medium" data-value="src"><a href="src/index.html">src</a></td>
-	<td data-value="79.75" class="pic medium">
+	<td data-value="79.79" class="pic medium">
 	<div class="chart"><div class="cover-fill" style="width: 79%"></div><div class="cover-empty" style="width: 21%"></div></div>
 	</td>
-	<td data-value="79.75" class="pct medium">79.75%</td>
-	<td data-value="2485" class="abs medium">1982/2485</td>
-	<td data-value="74.81" class="pct medium">74.81%</td>
-	<td data-value="1604" class="abs medium">1200/1604</td>
+	<td data-value="79.79" class="pct medium">79.79%</td>
+	<td data-value="2489" class="abs medium">1986/2489</td>
+	<td data-value="74.96" class="pct medium">74.96%</td>
+	<td data-value="1606" class="abs medium">1204/1606</td>
 	<td data-value="83.06" class="pct high">83.06%</td>
 	<td data-value="372" class="abs high">309/372</td>
-	<td data-value="82.34" class="pct high">82.34%</td>
-	<td data-value="2107" class="abs high">1735/2107</td>
+	<td data-value="82.37" class="pct high">82.37%</td>
+	<td data-value="2111" class="abs high">1739/2111</td>
 	</tr>
@@ -124,3 +124,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-12T14:28:33.558Z
+                at 2026-05-12T15:00:24.685Z
             </div>
@@ -127,0 +127,0 @@ <script src="prettify.js"></script>

coverage/src/codegen-plain-types.ts.html

@@ -985,3 +985,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-12T14:28:33.558Z
+                at 2026-05-12T15:00:24.685Z
             </div>
@@ -988,0 +988,0 @@ <script src="../prettify.js"></script>

coverage/src/index.html

@@ -26,5 +26,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">79.75% </span>
+                <span class="strong">79.79% </span>
                 <span class="quiet">Statements</span>
-                <span class='fraction'>1982/2485</span>
+                <span class='fraction'>1986/2489</span>
             </div>
@@ -34,5 +34,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">74.81% </span>
+                <span class="strong">74.96% </span>
                 <span class="quiet">Branches</span>
-                <span class='fraction'>1200/1604</span>
+                <span class='fraction'>1204/1606</span>
             </div>
@@ -49,5 +49,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">82.34% </span>
+                <span class="strong">82.37% </span>
                 <span class="quiet">Lines</span>
-                <span class='fraction'>1735/2107</span>
+                <span class='fraction'>1739/2111</span>
             </div>
@@ -86,13 +86,13 @@
 	<td class="file high" data-value="codegen-contract.ts"><a href="codegen-contract.ts.html">codegen-contract.ts</a></td>
-	<td data-value="87.85" class="pic high">
+	<td data-value="87.92" class="pic high">
 	<div class="chart"><div class="cover-fill" style="width: 87%"></div><div class="cover-empty" style="width: 13%"></div></div>
 	</td>
-	<td data-value="87.85" class="pct high">87.85%</td>
-	<td data-value="675" class="abs high">593/675</td>
-	<td data-value="82.2" class="pct high">82.2%</td>
-	<td data-value="472" class="abs high">388/472</td>
+	<td data-value="87.92" class="pct high">87.92%</td>
+	<td data-value="679" class="abs high">597/679</td>
+	<td data-value="82.7" class="pct high">82.7%</td>
+	<td data-value="474" class="abs high">392/474</td>
 	<td data-value="90.08" class="pct high">90.08%</td>
 	<td data-value="121" class="abs high">109/121</td>
-	<td data-value="88.98" class="pct high">88.98%</td>
-	<td data-value="554" class="abs high">493/554</td>
+	<td data-value="89.06" class="pct high">89.06%</td>
+	<td data-value="558" class="abs high">497/558</td>
 	</tr>
@@ -198,3 +198,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-12T14:28:33.558Z
+                at 2026-05-12T15:00:24.685Z
             </div>
@@ -201,0 +201,0 @@ <script src="../prettify.js"></script>

coverage/src/path-utils.ts.html

@@ -733,3 +733,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-12T14:28:33.558Z
+                at 2026-05-12T15:00:24.685Z
             </div>
@@ -736,0 +736,0 @@ <script src="../prettify.js"></script>

coverage/src/ts-render.ts.html

@@ -580,3 +580,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-12T14:28:33.558Z
+                at 2026-05-12T15:00:24.685Z
             </div>
@@ -583,0 +583,0 @@ <script src="../prettify.js"></script>

coverage/tests/helpers.ts.html

@@ -344,7 +344,7 @@
 <span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">895x</span>
+<span class="cline-any cline-yes">903x</span>
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-<span class="cline-any cline-yes">320x</span>
+<span class="cline-any cline-yes">325x</span>
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@@ -385,3 +385,3 @@ <span class="cline-any cline-neutral">&nbsp;</span>
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                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-12T14:28:33.558Z
+                at 2026-05-12T15:00:24.685Z
             </div>
@@ -822,0 +822,0 @@ <script src="../prettify.js"></script>

coverage/tests/index.html

@@ -104,3 +104,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-12T14:28:33.558Z
+                at 2026-05-12T15:00:24.685Z
             </div>
@@ -107,0 +107,0 @@ <script src="../prettify.js"></script>

dist/codegen-contract.d.ts.map

@@ -1,1 +0,1 @@
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package.json

 {
   "name": "@contractkit/plugin-typescript",
-  "version": "0.23.1",
+  "version": "0.24.0",
   "description": "ContractKit built-in plugin: TypeScript codegen (SDK clients, Koa routers, Zod schemas, plain types)",
@@ -32,4 +32,4 @@ "author": {
   "devDependencies": {
-    "@repo/config-typescript": "0.1.0",
-    "@repo/config-eslint": "0.3.1"
+    "@repo/config-eslint": "0.3.1",
+    "@repo/config-typescript": "0.1.0"
   },
@@ -36,0 +36,0 @@ "scripts": {

src/codegen-contract.ts

@@ -303,4 +303,13 @@ import { relative, dirname } from 'node:path';
             const outputKey = applyCase(field.name, outputCase);
-            const val = field.optional ? `data.${inputKey} ?? undefined` : `data.${inputKey}`;
-            lines.push(`    ${quoteKey(outputKey)}: ${val},`);
+            if (field.optional) {
+                // Conditional spread keeps the field optional (`k?: T`) in the inferred
+                // z.output / z.input type, instead of widening to required-nullable (`k: T | undefined`).
+                // Consumer code built with `...(x ? { k: x } : {})` is only assignable to the optional form.
+                // When inputCase is set, the input schema uses `.nullish()` so the guard must reject both
+                // null and undefined; otherwise `.optional()` only allows undefined.
+                const guard = hasInputTransform ? `data.${inputKey} != null` : `data.${inputKey} !== undefined`;
+                lines.push(`    ...(${guard} ? { ${quoteKey(outputKey)}: data.${inputKey} } : {}),`);
+            } else {
+                lines.push(`    ${quoteKey(outputKey)}: data.${inputKey},`);
+            }
         }
@@ -743,5 +752,9 @@ lines.push(`}));`);
                 const snakeKey = camelToSnake(f.name);
-                // Optional fields use .nullish() on input; coerce null → undefined in output
-                const val = f.optional ? `data.${snakeKey} ?? undefined` : `data.${snakeKey}`;
-                return `    ${quoteKey(f.name)}: ${val},`;
+                // Optional fields use .nullish() on input. Conditional spread (instead of `?? undefined`)
+                // keeps the key optional in the inferred output type (`k?: T`) rather than widening to
+                // required-nullable (`k: T | undefined`).
+                if (f.optional) {
+                    return `    ...(data.${snakeKey} != null ? { ${quoteKey(f.name)}: data.${snakeKey} } : {}),`;
+                }
+                return `    ${quoteKey(f.name)}: data.${snakeKey},`;
             })
@@ -757,4 +770,6 @@ .join('\n');
                 const pascalKey = camelToPascal(f.name);
-                const val = f.optional ? `data.${pascalKey} ?? undefined` : `data.${pascalKey}`;
-                return `    ${quoteKey(f.name)}: ${val},`;
+                if (f.optional) {
+                    return `    ...(data.${pascalKey} != null ? { ${quoteKey(f.name)}: data.${pascalKey} } : {}),`;
+                }
+                return `    ${quoteKey(f.name)}: data.${pascalKey},`;
             })
@@ -761,0 +776,0 @@ .join('\n');

tests/codegen-contract.test.ts

@@ -1063,3 +1063,3 @@ import { generateContract, renderType } from '../src/codegen-contract.js';
             expect(output).toContain('grantType: data.grant_type');
-            expect(output).toContain('clientId: data.client_id ?? undefined');
+            expect(output).toContain('clientId: data.client_id,');
             expect(output).toContain('clientSecret: data.client_secret');
@@ -1069,3 +1069,6 @@ expect(output).toContain('export type Child = z.output<typeof Child>');
 
-        it('input=snake: optional fields coerce null → undefined in the transform', () => {
+        it('input=snake: optional fields use conditional spread guarded by `!= null`', () => {
+            // .nullish() on input accepts null and undefined; conditional spread keeps the field
+            // optional in the inferred output type (`k?: T`) instead of widening to required-nullable
+            // (`k: T | undefined`). The `!= null` guard omits the key for both null and undefined.
             const root = contractRoot([
@@ -1081,5 +1084,38 @@ model(
             expect(output).toContain('firstName: data.first_name,');
-            expect(output).toContain('clientId: data.client_id ?? undefined,');
+            expect(output).toContain('...(data.client_id != null ? { clientId: data.client_id } : {}),');
+            expect(output).not.toContain('?? undefined');
         });
+
+        it('output=snake: optional fields use conditional spread guarded by `!== undefined`', () => {
+            // With only outputCase set, input is `.optional()` (undefined-only). Conditional spread keeps
+            // the field optional in the inferred z.input type so consumers building values with
+            // `...(x ? { k: x } : {})` are assignable.
+            const root = contractRoot([
+                model('Token', [field('accessToken', scalarType('string')), field('refreshToken', scalarType('string'), { optional: true })], {
+                    outputCase: 'snake',
+                }),
+            ]);
+            const output = generateContract(root);
+            expect(output).toContain('refreshToken: z.string().optional()');
+            expect(output).toContain('access_token: data.accessToken,');
+            expect(output).toContain('...(data.refreshToken !== undefined ? { refresh_token: data.refreshToken } : {}),');
+            expect(output).not.toContain('?? undefined');
+        });
+
+        it('input=pascal: inline-object optional fields use conditional spread guarded by `!= null`', () => {
+            const dataType = inlineObjectType([
+                field('id', scalarType('uuid')),
+                field('amount', scalarType('number'), { optional: true }),
+            ]);
+            const root = contractRoot([
+                model('Webhook', [field('event', scalarType('string')), field('data', dataType)], { inputCase: 'pascal' }),
+            ]);
+            const output = generateContract(root);
+            // Inline object emits its own transform inside the Webhook input shape.
+            expect(output).toContain('Amount: z.coerce.number().nullish()');
+            expect(output).toContain('id: data.Id,');
+            expect(output).toContain('...(data.Amount != null ? { amount: data.Amount } : {}),');
+            expect(output).not.toContain('?? undefined');
+        });
     });
 });

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