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fix: Assert expected hooks for restricted method specifications #3993

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fix: Assert expected hooks for restricted method specifications #3993

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19 changes: 16 additions & 3 deletions packages/snaps-rpc-methods/src/permissions.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { selectHooks } from '@metamask/json-rpc-engine/v2';
import { selectHooks, assertExpectedHooks } from '@metamask/json-rpc-engine/v2';
import {
createRestrictedMethodMessenger,
type PermissionConstraint,
Expand Down Expand Up @@ -70,8 +70,20 @@ export const buildSnapRestrictedMethodSpecifications = (
excludedPermissions: string[],
hooks: Record<string, unknown>,
messenger: RestrictedMethodMessenger,
) =>
Object.values(restrictedMethodPermissionBuilders).reduce<
) => {
const permissionBuilders = Object.values(restrictedMethodPermissionBuilders);

const expectedHookNames = new Set(
permissionBuilders.flatMap((builder) =>
builder.methodHooks
? Object.getOwnPropertyNames(builder.methodHooks)
: [],
),
);

assertExpectedHooks(hooks, expectedHookNames);

return permissionBuilders.reduce<
Record<string, PermissionSpecificationConstraint>
>(
(
Expand All @@ -94,3 +106,4 @@ export const buildSnapRestrictedMethodSpecifications = (
},
{},
);
};
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