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Add support for propertyNames in object type #8

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Merged
SamyPesse merged 3 commits into from
Mar 5, 2026
Merged

Add support for propertyNames in object type #8

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SamyPesse Mar 5, 2026
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Add support for propertyNames
SamyPesse Mar 5, 2026
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SamyPesse Mar 5, 2026
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51 changes: 51 additions & 0 deletions bun.lock
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55 changes: 55 additions & 0 deletions src/compileValueSchema.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import {
OpenAPINumberSchema,
OpenAPIObjectSchema,
OpenAPIOneOfSchema,
OpenAPIPropertyNamesSchema,
OpenAPIStringSchema,
OpenAPIValueSchema,
} from './types';
Expand Down Expand Up @@ -71,6 +72,17 @@ export function compileValueSchema(compiler: Compiler, schema: OpenAPIValueSchem
return compileAnySchema(compiler, schema);
}

function normalizePropertyNamesSchema(schema: OpenAPIPropertyNamesSchema): OpenAPIValueSchema {
if ('type' in schema || 'anyOf' in schema || 'oneOf' in schema || 'allOf' in schema) {
return schema;
}

return {
type: 'string',
...schema,
};
}

function compileAnyOfSchema(compiler: Compiler, schema: OpenAPIAnyOfSchema) {
return compiler.declareValidationFunction(schema, ({ value, path, context, error }) => {
const nodes: namedTypes.BlockStatement['body'] = [];
Expand Down Expand Up @@ -337,6 +349,49 @@ function compileObjectSchema(compiler: Compiler, schema: OpenAPIObjectSchema) {
]),
);

if (schema.propertyNames) {
const keyIdentifier = builders.identifier('key');
const keyResultIdentifier = builders.identifier('keyResult');
const propertyNamesSchemaIdentifier = compileValueSchema(
compiler,
normalizePropertyNamesSchema(schema.propertyNames),
);

nodes.push(
builders.forOfStatement(
builders.variableDeclaration('const', [
builders.variableDeclarator(keyIdentifier),
]),
keysIdentifier,
builders.blockStatement([
builders.variableDeclaration('const', [
builders.variableDeclarator(
keyResultIdentifier,
builders.callExpression(propertyNamesSchemaIdentifier, [
builders.arrayExpression([
builders.spreadElement(path),
keyIdentifier,
]),
keyIdentifier,
context,
]),
),
]),
builders.ifStatement(
builders.binaryExpression(
'instanceof',
keyResultIdentifier,
ValidationErrorIdentifier,
),
builders.blockStatement([
builders.returnStatement(keyResultIdentifier),
]),
),
]),
),
);
}

if (schema.minProperties) {
nodes.push(
builders.ifStatement(
Expand Down
1 change: 1 addition & 0 deletions src/hash.ts
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Expand Up @@ -23,6 +23,7 @@ const PRESERVE_PROPS = [
'pattern',
'format',
'properties',
'propertyNames',
'additionalProperties',
'minProperties',
'maxProperties',
Expand Down
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