@contractkit/plugin-typescript - npm Package Compare versions

Comparing version 0.17.3 to 0.17.4

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

 
-> @contractkit/plugin-typescript@0.17.3 build:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
+> @contractkit/plugin-typescript@0.17.4 build:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
 > eslint --max-warnings=0 && pnpm run build
 
 
-> @contractkit/plugin-typescript@0.17.3 build /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
+> @contractkit/plugin-typescript@0.17.4 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     125.56 KB
-ESM dist/index.js.map 272.67 KB
-ESM ⚡️ Build success in 328ms
+ESM dist/index.js     126.39 KB
+ESM dist/index.js.map 274.93 KB
+ESM ⚡️ Build success in 216ms
 DTS Build start
-DTS ⚡️ Build success in 5174ms
+DTS ⚡️ Build success in 5850ms
 DTS dist/index.d.ts 3.44 KB

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

 
-> @contractkit/plugin-typescript@0.17.3 test:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
+> @contractkit/plugin-typescript@0.17.4 test:ci /home/runner/work/ContractKit/ContractKit/packages/plugin-typescript
 > vitest run --coverage
@@ -9,13 +9,13 @@
 
- ✓ tests/codegen-operation.test.ts (88 tests) 168ms
- ✓ tests/codegen-sdk.test.ts (123 tests) 255ms
- ✓ tests/codegen-contract.test.ts (124 tests) 248ms
- ✓ tests/codegen-plain-types.test.ts (58 tests) 35ms
- ✓ tests/pipeline.test.ts (25 tests) 111ms
- ✓ tests/codegen-server.test.ts (15 tests) 17ms
+ ✓ tests/codegen-operation.test.ts (88 tests) 98ms
+ ✓ tests/codegen-contract.test.ts (124 tests) 242ms
+ ✓ tests/codegen-sdk.test.ts (123 tests) 282ms
+ ✓ tests/codegen-plain-types.test.ts (61 tests) 45ms
+ ✓ tests/codegen-server.test.ts (15 tests) 22ms
+ ✓ tests/pipeline.test.ts (25 tests) 120ms
 
  Test Files  6 passed (6)
-      Tests  433 passed (433)
-   Start at  15:36:42
-   Duration  6.17s (transform 2.45s, setup 0ms, import 11.28s, tests 833ms, environment 7ms)
+      Tests  436 passed (436)
+   Start at  15:55:13
+   Duration  6.81s (transform 3.80s, setup 0ms, import 13.43s, tests 808ms, environment 1ms)
 
@@ -26,7 +26,7 @@  % Coverage report from v8
 -------------------|---------|----------|---------|---------|-------------------
-All files          |   77.65 |    74.31 |   82.12 |   79.62 |                   
- src               |   77.35 |    73.93 |   81.51 |   79.28 |                   
+All files          |   77.84 |    74.45 |    82.5 |   79.74 |                   
+ src               |   77.54 |    74.08 |   81.92 |    79.4 |                   
   ...n-contract.ts |   87.83 |    82.12 |   90.08 |   88.96 | ...1069,1074-1075 
   ...-operation.ts |   78.18 |    74.26 |   78.08 |   79.69 | ...68-679,684-685 
-  ...lain-types.ts |    87.5 |    76.76 |   92.85 |   91.66 | ...99,211,217,269 
+  ...lain-types.ts |   89.08 |    78.37 |   96.66 |    92.3 | ...31,243,249,301 
   codegen-sdk.ts   |   88.75 |     83.6 |      85 |   91.49 | ...23,678,712-729 
@@ -33,0 +33,0 @@ index.ts         |   23.35 |    19.51 |   33.33 |   25.69 | ...97,415,418,421

CHANGELOG.md

 # @contractkit/contractkit-plugin-typescript
 
+## 0.17.4
+
+### Patch Changes
+
+- 684a639: Fix plain TypeScript codegen producing invalid `extends` clauses when a child contract redeclares an inherited field without the explicit `override` keyword (e.g. narrowing `kind: BusinessRoleKind` to `kind: 'employee'`). The base is now wrapped in `Omit<Base, 'fieldName'>` for any redeclared field, matching the behaviour for explicit `override` fields.
+
 ## 0.17.3
@@ -4,0 +10,0 @@

coverage/index.html

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             <div class='fl pad1y space-right2'>
-                <span class="strong">77.65% </span>
+                <span class="strong">77.84% </span>
                 <span class="quiet">Statements</span>
-                <span class='fraction'>1717/2211</span>
+                <span class='fraction'>1732/2225</span>
             </div>
@@ -34,5 +34,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">74.31% </span>
+                <span class="strong">74.45% </span>
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+                <span class='fraction'>1119/1503</span>
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+                <span class="strong">82.5% </span>
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+                <span class='fraction'>297/360</span>
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+                <span class="strong">79.74% </span>
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+                <span class='fraction'>1508/1891</span>
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@@ -87,13 +87,13 @@
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+	<td data-value="77.54" class="pic medium">
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-	<td data-value="2159" class="abs medium">1670/2159</td>
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-	<td data-value="1458" class="abs medium">1078/1458</td>
-	<td data-value="81.51" class="pct high">81.51%</td>
-	<td data-value="330" class="abs high">269/330</td>
-	<td data-value="79.28" class="pct medium">79.28%</td>
-	<td data-value="1834" class="abs medium">1454/1834</td>
+	<td data-value="77.54" class="pct medium">77.54%</td>
+	<td data-value="2173" class="abs medium">1685/2173</td>
+	<td data-value="74.08" class="pct medium">74.08%</td>
+	<td data-value="1470" class="abs medium">1089/1470</td>
+	<td data-value="81.92" class="pct high">81.92%</td>
+	<td data-value="332" class="abs high">272/332</td>
+	<td data-value="79.4" class="pct medium">79.4%</td>
+	<td data-value="1845" class="abs medium">1465/1845</td>
 	</tr>
@@ -124,3 +124,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-05T15:36:48.642Z
+                at 2026-05-05T15:55:20.433Z
             </div>
@@ -127,0 +127,0 @@ <script src="prettify.js"></script>

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

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+                <span class="strong">89.08% </span>
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+                <span class='fraction'>155/174</span>
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+                <span class="strong">96.66% </span>
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+<span class="cline-any cline-yes">18x</span>
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@@ -524,27 +588,27 @@ <span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-yes">96x</span>
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+<span class="cline-any cline-yes">106x</span>
+<span class="cline-any cline-yes">106x</span>
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-<span class="cline-any cline-yes">96x</span>
+<span class="cline-any cline-yes">106x</span>
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-<span class="cline-any cline-yes">18x</span>
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-<span class="cline-any cline-yes">18x</span>
-<span class="cline-any cline-yes">18x</span>
+<span class="cline-any cline-yes">21x</span>
+<span class="cline-any cline-yes">21x</span>
+<span class="cline-any cline-yes">21x</span>
+<span class="cline-any cline-yes">21x</span>
+<span class="cline-any cline-yes">21x</span>
+<span class="cline-any cline-yes">21x</span>
+<span class="cline-any cline-yes">21x</span>
+<span class="cline-any cline-yes">21x</span>
 <span class="cline-any cline-no">&nbsp;</span>
 <span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">18x</span>
+<span class="cline-any cline-yes">21x</span>
 <span class="cline-any cline-neutral">&nbsp;</span>
@@ -678,4 +742,6 @@ <span class="cline-any cline-neutral">&nbsp;</span>
 &nbsp;
+    const modelMap = new Map(root.models.map(m =&gt; [m.name, m]));
+&nbsp;
     for (const model of topoSortModels(root.models)) {
-        lines.push(...generateModel(model, context?.currentOutPath, allModelsWithInput, allModelsWithOutput));
+        lines.push(...generateModel(model, context?.currentOutPath, allModelsWithInput, allModelsWithOutput, modelMap));
         lines.push('');
@@ -689,3 +755,9 @@ }
 &nbsp;
-function generateModel(model: ModelNode, outPath?: string, modelsWithInput?: Set&lt;string&gt;, modelsWithOutput?: Set&lt;string&gt;): string[] {
+function generateModel(
+    model: ModelNode,
+    outPath?: string,
+    modelsWithInput?: Set&lt;string&gt;,
+    modelsWithOutput?: Set&lt;string&gt;,
+    modelMap?: Map&lt;string, ModelNode&gt;,
+): string[] {
     // Type alias: Name : typeExpression
@@ -700,3 +772,3 @@ if (model.type) {
 &nbsp;
-    const lines = needsInputSplit ? generateVisibilityModel(model, outPath, modelsWithInput) : generateSimpleModel(model, outPath);
+    const lines = needsInputSplit ? generateVisibilityModel(model, outPath, modelsWithInput, modelMap) : generateSimpleModel(model, outPath, modelMap);
 &nbsp;
@@ -710,2 +782,26 @@ if (modelsWithOutput?.has(model.name)) {
 &nbsp;
+/** Recursively collect every field name defined on `bases` and their ancestors. Used to detect
+ * fields that the child re-declares without an explicit `override` keyword — those still need an
+ * `Omit&lt;Base, …&gt;` wrap, otherwise the child's narrower/incompatible declaration collides with the
+ * inherited one. */
+function collectInheritedFieldNames(bases: string[], modelMap: Map&lt;string, ModelNode&gt;): Set&lt;string&gt; {
+    const result = new Set&lt;string&gt;();
+    const visit = (name: string): void =&gt; {
+        const m = modelMap.get(name);
+        if (!m || m.type) return;
+        for (const f of m.fields) result.add(f.name);
+        for (const b of m.bases ?? []) visit(b);
+    };
+    for (const b of bases) visit(b);
+    return result;
+}
+&nbsp;
+/** Names of fields the child declaration overrides — explicit `override` plus any field whose
+ * name shadows an inherited one. The latter catches single-base redeclarations that omit the
+ * `override` keyword (e.g. narrowing `kind: BusinessRoleKind` → `kind: 'employee'`). */
+function computeOverrideNames(model: ModelNode, modelMap?: Map&lt;string, ModelNode&gt;): string[] {
+    const inherited = modelMap ? collectInheritedFieldNames(model.bases ?? [], modelMap) : <span class="branch-1 cbranch-no" title="branch not covered" >new Set&lt;string&gt;();</span>
+    return model.fields.filter(f =&gt; f.override || inherited.has(f.name)).map(f =&gt; f.name);
+}
+&nbsp;
 function generateComments(model: ModelNode, outPath?: string): string[] {
@@ -740,7 +836,7 @@ const lines: string[] = [];
 &nbsp;
-/** Build the `extends` clause for a multi-base model.
- * Override-marked field names are wrapped in `Omit&lt;Base, 'name1' | 'name2'&gt;` per base so the
- * subclass can legally redeclare them with new types. TypeScript's `Omit&lt;T, K extends keyof any&gt;`
- * tolerates omit keys that don't appear on the base, so we omit unconditionally — no need to know
- * each base's actual field set. */
+/** Build the `extends` clause for a model.
+ * Each entry in `overrideNames` is wrapped in `Omit&lt;Base, 'name1' | 'name2'&gt;` per base so the
+ * subclass can legally redeclare those fields with new (possibly incompatible) types.
+ * TypeScript's `Omit&lt;T, K extends keyof any&gt;` tolerates omit keys that don't appear on the base,
+ * so we apply the same omit list to every base without per-base field-set lookup. */
 function buildExtendsClause(bases: string[], overrideNames: string[], baseNameResolver: (b: string) =&gt; string): string {
@@ -754,3 +850,3 @@ if (bases.length === 0) return '';
 &nbsp;
-function generateSimpleModel(model: ModelNode, outPath?: string): string[] {
+function generateSimpleModel(model: ModelNode, outPath?: string, modelMap?: Map&lt;string, ModelNode&gt;): string[] {
     const lines: string[] = [];
@@ -760,3 +856,3 @@ lines.push(...generateComments(model, outPath));
     const bases = model.bases ?? [];
-    const overrideNames = model.fields.filter(f =&gt; f.override).map(f =&gt; f.name);
+    const overrideNames = computeOverrideNames(model, modelMap);
     lines.push(`export interface ${model.name}${buildExtendsClause(bases, overrideNames, b =&gt; b)} {`);
@@ -772,3 +868,3 @@ &nbsp;
 &nbsp;
-function generateVisibilityModel(model: ModelNode, outPath?: string, modelsWithInput?: Set&lt;string&gt;): string[] {
+function generateVisibilityModel(model: ModelNode, outPath?: string, modelsWithInput?: Set&lt;string&gt;, modelMap?: Map&lt;string, ModelNode&gt;): string[] {
     const lines: string[] = [];
@@ -778,3 +874,3 @@ lines.push(...generateComments(model, outPath));
     const bases = model.bases ?? [];
-    const overrideNames = model.fields.filter(f =&gt; f.override).map(<span class="fstat-no" title="function not covered" >f =&gt; <span class="cstat-no" title="statement not covered" >f</span>.name)</span>;
+    const overrideNames = computeOverrideNames(model, modelMap);
 &nbsp;
@@ -909,3 +1005,3 @@ // Read type — omit writeonly fields
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-05T15:36:48.642Z
+                at 2026-05-05T15:55:20.433Z
             </div>
@@ -912,0 +1008,0 @@ <script src="../prettify.js"></script>

coverage/src/index.html

@@ -26,5 +26,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">77.35% </span>
+                <span class="strong">77.54% </span>
                 <span class="quiet">Statements</span>
-                <span class='fraction'>1670/2159</span>
+                <span class='fraction'>1685/2173</span>
             </div>
@@ -34,5 +34,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">73.93% </span>
+                <span class="strong">74.08% </span>
                 <span class="quiet">Branches</span>
-                <span class='fraction'>1078/1458</span>
+                <span class='fraction'>1089/1470</span>
             </div>
@@ -42,5 +42,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">81.51% </span>
+                <span class="strong">81.92% </span>
                 <span class="quiet">Functions</span>
-                <span class='fraction'>269/330</span>
+                <span class='fraction'>272/332</span>
             </div>
@@ -50,5 +50,5 @@
             <div class='fl pad1y space-right2'>
-                <span class="strong">79.28% </span>
+                <span class="strong">79.4% </span>
                 <span class="quiet">Lines</span>
-                <span class='fraction'>1454/1834</span>
+                <span class='fraction'>1465/1845</span>
             </div>
@@ -117,13 +117,13 @@
 	<td class="file high" data-value="codegen-plain-types.ts"><a href="codegen-plain-types.ts.html">codegen-plain-types.ts</a></td>
-	<td data-value="87.5" class="pic high">
-	<div class="chart"><div class="cover-fill" style="width: 87%"></div><div class="cover-empty" style="width: 13%"></div></div>
+	<td data-value="89.08" class="pic high">
+	<div class="chart"><div class="cover-fill" style="width: 89%"></div><div class="cover-empty" style="width: 11%"></div></div>
 	</td>
-	<td data-value="87.5" class="pct high">87.5%</td>
-	<td data-value="160" class="abs high">140/160</td>
-	<td data-value="76.76" class="pct medium">76.76%</td>
-	<td data-value="99" class="abs medium">76/99</td>
-	<td data-value="92.85" class="pct high">92.85%</td>
-	<td data-value="28" class="abs high">26/28</td>
-	<td data-value="91.66" class="pct high">91.66%</td>
-	<td data-value="132" class="abs high">121/132</td>
+	<td data-value="89.08" class="pct high">89.08%</td>
+	<td data-value="174" class="abs high">155/174</td>
+	<td data-value="78.37" class="pct medium">78.37%</td>
+	<td data-value="111" class="abs medium">87/111</td>
+	<td data-value="96.66" class="pct high">96.66%</td>
+	<td data-value="30" class="abs high">29/30</td>
+	<td data-value="92.3" class="pct high">92.3%</td>
+	<td data-value="143" class="abs high">132/143</td>
 	</tr>
@@ -199,3 +199,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-05T15:36:48.642Z
+                at 2026-05-05T15:55:20.433Z
             </div>
@@ -202,0 +202,0 @@ <script src="../prettify.js"></script>

coverage/src/path-utils.ts.html

@@ -637,3 +637,3 @@
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-05T15:36:48.642Z
+                at 2026-05-05T15:55:20.433Z
             </div>
@@ -640,0 +640,0 @@ <script src="../prettify.js"></script>

coverage/src/ts-render.ts.html

@@ -240,3 +240,3 @@
 <span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">165x</span>
+<span class="cline-any cline-yes">178x</span>
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@@ -258,5 +258,5 @@ <span class="cline-any cline-neutral">&nbsp;</span>
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@@ -278,3 +278,3 @@ <span class="cline-any cline-yes">20x</span>
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-<span class="cline-any cline-yes">5x</span>
+<span class="cline-any cline-yes">12x</span>
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@@ -298,3 +298,3 @@ <span class="cline-any cline-yes">3x</span>
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+<span class="cline-any cline-yes">92x</span>
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@@ -373,3 +373,3 @@ <span class="cline-any cline-yes">15x</span>
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-<span class="cline-any cline-yes">16x</span>
+<span class="cline-any cline-yes">19x</span>
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@@ -588,3 +588,3 @@ <span class="cline-any cline-neutral">&nbsp;</span>
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-05T15:36:48.642Z
+                at 2026-05-05T15:55:20.433Z
             </div>
@@ -591,0 +591,0 @@ <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">857x</span>
+<span class="cline-any cline-yes">874x</span>
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+<span class="cline-any cline-yes">318x</span>
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+<span class="cline-any cline-yes">257x</span>
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-<span class="cline-any cline-yes">171x</span>
+<span class="cline-any cline-yes">178x</span>
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@@ -418,3 +418,3 @@ <span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-yes">134x</span>
+<span class="cline-any cline-yes">137x</span>
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@@ -819,3 +819,3 @@ <span class="cline-any cline-neutral">&nbsp;</span>
                 <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
-                at 2026-05-05T15:36:48.642Z
+                at 2026-05-05T15:55:20.433Z
             </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 2026-05-05T15:36:48.642Z
+                at 2026-05-05T15:55:20.433Z
             </div>
@@ -107,0 +107,0 @@ <script src="../prettify.js"></script>

dist/codegen-plain-types.d.ts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"codegen-plain-types.d.ts","sourceRoot":"","sources":["../src/codegen-plain-types.ts"],"names":[],"mappings":"AACA,OAAO,KAAK,EAAE,gBAAgB,EAAwB,MAAM,mBAAmB,CAAC;AAEhF,OAAO,KAAK,EAAE,sBAAsB,EAAE,MAAM,uBAAuB,CAAC;AAapE;;;;;GAKG;AACH,wBAAgB,kBAAkB,CAAC,IAAI,EAAE,gBAAgB,EAAE,OAAO,CAAC,EAAE,sBAAsB,GAAG,MAAM,CAyCnG"}
+{"version":3,"file":"codegen-plain-types.d.ts","sourceRoot":"","sources":["../src/codegen-plain-types.ts"],"names":[],"mappings":"AACA,OAAO,KAAK,EAAE,gBAAgB,EAAwB,MAAM,mBAAmB,CAAC;AAEhF,OAAO,KAAK,EAAE,sBAAsB,EAAE,MAAM,uBAAuB,CAAC;AAapE;;;;;GAKG;AACH,wBAAgB,kBAAkB,CAAC,IAAI,EAAE,gBAAgB,EAAE,OAAO,CAAC,EAAE,sBAAsB,GAAG,MAAM,CA2CnG"}

package.json

 {
   "name": "@contractkit/plugin-typescript",
-  "version": "0.17.3",
+  "version": "0.17.4",
   "description": "ContractKit built-in plugin: TypeScript codegen (SDK clients, Koa routers, Zod schemas, plain types)",
@@ -32,4 +32,4 @@ "author": {
   "devDependencies": {
-    "@repo/config-eslint": "0.3.1",
-    "@repo/config-typescript": "0.1.0"
+    "@repo/config-typescript": "0.1.0",
+    "@repo/config-eslint": "0.3.1"
   },
@@ -36,0 +36,0 @@ "scripts": {

src/codegen-plain-types.ts

@@ -58,4 +58,6 @@ import { relative, dirname } from 'node:path';
 
+    const modelMap = new Map(root.models.map(m => [m.name, m]));
+
     for (const model of topoSortModels(root.models)) {
-        lines.push(...generateModel(model, context?.currentOutPath, allModelsWithInput, allModelsWithOutput));
+        lines.push(...generateModel(model, context?.currentOutPath, allModelsWithInput, allModelsWithOutput, modelMap));
         lines.push('');
@@ -69,3 +71,9 @@ }
 
-function generateModel(model: ModelNode, outPath?: string, modelsWithInput?: Set<string>, modelsWithOutput?: Set<string>): string[] {
+function generateModel(
+    model: ModelNode,
+    outPath?: string,
+    modelsWithInput?: Set<string>,
+    modelsWithOutput?: Set<string>,
+    modelMap?: Map<string, ModelNode>,
+): string[] {
     // Type alias: Name : typeExpression
@@ -80,3 +88,3 @@ if (model.type) {
 
-    const lines = needsInputSplit ? generateVisibilityModel(model, outPath, modelsWithInput) : generateSimpleModel(model, outPath);
+    const lines = needsInputSplit ? generateVisibilityModel(model, outPath, modelsWithInput, modelMap) : generateSimpleModel(model, outPath, modelMap);
 
@@ -90,2 +98,26 @@ if (modelsWithOutput?.has(model.name)) {
 
+/** Recursively collect every field name defined on `bases` and their ancestors. Used to detect
+ * fields that the child re-declares without an explicit `override` keyword — those still need an
+ * `Omit<Base, …>` wrap, otherwise the child's narrower/incompatible declaration collides with the
+ * inherited one. */
+function collectInheritedFieldNames(bases: string[], modelMap: Map<string, ModelNode>): Set<string> {
+    const result = new Set<string>();
+    const visit = (name: string): void => {
+        const m = modelMap.get(name);
+        if (!m || m.type) return;
+        for (const f of m.fields) result.add(f.name);
+        for (const b of m.bases ?? []) visit(b);
+    };
+    for (const b of bases) visit(b);
+    return result;
+}
+
+/** Names of fields the child declaration overrides — explicit `override` plus any field whose
+ * name shadows an inherited one. The latter catches single-base redeclarations that omit the
+ * `override` keyword (e.g. narrowing `kind: BusinessRoleKind` → `kind: 'employee'`). */
+function computeOverrideNames(model: ModelNode, modelMap?: Map<string, ModelNode>): string[] {
+    const inherited = modelMap ? collectInheritedFieldNames(model.bases ?? [], modelMap) : new Set<string>();
+    return model.fields.filter(f => f.override || inherited.has(f.name)).map(f => f.name);
+}
+
 function generateComments(model: ModelNode, outPath?: string): string[] {
@@ -120,7 +152,7 @@ const lines: string[] = [];
 
-/** Build the `extends` clause for a multi-base model.
- * Override-marked field names are wrapped in `Omit<Base, 'name1' | 'name2'>` per base so the
- * subclass can legally redeclare them with new types. TypeScript's `Omit<T, K extends keyof any>`
- * tolerates omit keys that don't appear on the base, so we omit unconditionally — no need to know
- * each base's actual field set. */
+/** Build the `extends` clause for a model.
+ * Each entry in `overrideNames` is wrapped in `Omit<Base, 'name1' | 'name2'>` per base so the
+ * subclass can legally redeclare those fields with new (possibly incompatible) types.
+ * TypeScript's `Omit<T, K extends keyof any>` tolerates omit keys that don't appear on the base,
+ * so we apply the same omit list to every base without per-base field-set lookup. */
 function buildExtendsClause(bases: string[], overrideNames: string[], baseNameResolver: (b: string) => string): string {
@@ -134,3 +166,3 @@ if (bases.length === 0) return '';
 
-function generateSimpleModel(model: ModelNode, outPath?: string): string[] {
+function generateSimpleModel(model: ModelNode, outPath?: string, modelMap?: Map<string, ModelNode>): string[] {
     const lines: string[] = [];
@@ -140,3 +172,3 @@ lines.push(...generateComments(model, outPath));
     const bases = model.bases ?? [];
-    const overrideNames = model.fields.filter(f => f.override).map(f => f.name);
+    const overrideNames = computeOverrideNames(model, modelMap);
     lines.push(`export interface ${model.name}${buildExtendsClause(bases, overrideNames, b => b)} {`);
@@ -152,3 +184,3 @@
 
-function generateVisibilityModel(model: ModelNode, outPath?: string, modelsWithInput?: Set<string>): string[] {
+function generateVisibilityModel(model: ModelNode, outPath?: string, modelsWithInput?: Set<string>, modelMap?: Map<string, ModelNode>): string[] {
     const lines: string[] = [];
@@ -158,3 +190,3 @@ lines.push(...generateComments(model, outPath));
     const bases = model.bases ?? [];
-    const overrideNames = model.fields.filter(f => f.override).map(f => f.name);
+    const overrideNames = computeOverrideNames(model, modelMap);
 
@@ -161,0 +193,0 @@ // Read type — omit writeonly fields

tests/codegen-plain-types.test.ts

@@ -422,2 +422,40 @@ import { describe, it, expect } from 'vitest';
         });
+
+        it('omits implicit single-base redeclarations even without explicit override', () => {
+            // BusinessRoleOfficer-style: child redeclares `kind` without `override` keyword,
+            // narrowing to an incompatible literal — must wrap base in Omit to compile.
+            const root = contractRoot([
+                model('Employee', [field('kind', literalType('employee')), field('title', scalarType('string'))]),
+                model('Officer', [field('kind', literalType('officer')), field('isControlPerson', scalarType('boolean'))], {
+                    bases: ['Employee'],
+                }),
+            ]);
+            const output = generatePlainTypes(root);
+            expect(output).toContain("export interface Officer extends Omit<Employee, 'kind'> {");
+        });
+
+        it('applies implicit-override Omit to both Read and Input interfaces', () => {
+            const root = contractRoot([
+                model('Employee', [
+                    field('id', scalarType('uuid'), { visibility: 'readonly' }),
+                    field('kind', literalType('employee')),
+                ]),
+                model('Officer', [field('kind', literalType('officer')), field('isControlPerson', scalarType('boolean'))], {
+                    bases: ['Employee'],
+                }),
+            ]);
+            const output = generatePlainTypes(root);
+            expect(output).toContain("export interface Officer extends Omit<Employee, 'kind'> {");
+            expect(output).toContain("export interface OfficerInput extends Omit<EmployeeInput, 'kind'> {");
+        });
+
+        it('detects redeclaration through transitive base chain', () => {
+            const root = contractRoot([
+                model('Root', [field('kind', scalarType('string'))]),
+                model('Mid', [], { bases: ['Root'] }),
+                model('Leaf', [field('kind', literalType('leaf'))], { bases: ['Mid'] }),
+            ]);
+            const output = generatePlainTypes(root);
+            expect(output).toContain("export interface Leaf extends Omit<Mid, 'kind'> {");
+        });
     });
@@ -424,0 +462,0 @@

New alerts

URL strings

Supply chain risk

Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

Fixed alerts

URL strings

Supply chain risk

Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

2204774

0.75%

Lines of code

14261

0.71%

No dependency changes