ClientTransformState Type — svelte Architecture

Source Code

packages/svelte/src/compiler/phases/3-transform/client/types.d.ts lines 17–37

export interface ClientTransformState extends TransformState {
	/**
	 * `true` if the current lexical scope belongs to a class constructor. this allows
	 * us to rewrite `this.foo` as `this.#foo.value`
	 */
	readonly in_constructor: boolean;

	readonly transform: Record<
		string,
		{
			/** turn `foo` into e.g. `$.get(foo)` */
			read: (id: Identifier) => Expression;
			/** turn `foo = bar` into e.g. `$.set(foo, bar)` */
			assign?: (node: Identifier, value: Expression, proxy?: boolean) => Expression;
			/** turn `foo.bar = baz` into e.g. `$.mutate(foo, $.get(foo).bar = baz);` */
			mutate?: (node: Identifier, mutation: AssignmentExpression | UpdateExpression) => Expression;
			/** turn `foo++` into e.g. `$.update(foo)` */
			update?: (node: UpdateExpression) => Expression;
		}
	>;
}