test: lock V8 coverage counter semantics

tests/fixtures/v8-coverage-counter-semantics/src/import-empty.ts

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+import {} from "./runtime.ts";

tests/fixtures/v8-coverage-counter-semantics/src/import-side-effect.ts

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+import "./runtime.ts";

tests/fixtures/v8-coverage-counter-semantics/src/import-type-empty.ts

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+import type {} from "./runtime.ts";

tests/fixtures/v8-coverage-counter-semantics/src/import-value.ts

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+import { runtimeValue } from "./runtime.ts";
+
+export { runtimeValue as importedRuntimeValue };

tests/fixtures/v8-coverage-counter-semantics/src/reexport-named.ts

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+export { runtimeValue } from "./runtime.ts";

tests/fixtures/v8-coverage-counter-semantics/src/reexport-star.ts

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+export * from "./runtime.ts";

tests/fixtures/v8-coverage-counter-semantics/src/runtime.ts

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+export const runtimeValue = 1;

tests/fixtures/v8-coverage-counter-semantics/src/type-only.ts

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+export interface CounterFixtureShape {
+  readonly value: number;
+}
+
+export type CounterFixtureValue = CounterFixtureShape["value"];