estree-toolkit/dist/helpers.d.ts

Traverser, scope tracker, and more tools for working with ESTree AST

import type { Node as _Node, JSXSpreadChild, BaseNode } from 'estree-jsx';
import type { ImportAttribute } from 'estree';
export type Node = _Node | JSXSpreadChild | ImportAttribute;
export { BaseNode };
/**
 * Causes a compiler error if a switch is not exhaustive
 * or you can say causes a compiler error if all possible switch cases
 * are not covered
 *
 * This function would never get called in reality, if your code is correct
*/
export declare const assertNever: (x: never) => never;
export type NodeMap = {
    [N in Node as `${N['type']}`]: N;
};
export type NodeTypes = keyof NodeMap;
export type NodeT<N extends NodeTypes> = NodeMap[N];
export type ParentsOf<N extends Node | Node[]> = {
    [K in NodeTypes]: N extends NodeMap[K][keyof NodeMap[K]] ? NodeMap[K] : never;
}[NodeTypes];
export type PossibleKeysInParent<N extends Node | Node[], P extends Node> = Exclude<{
    [K in keyof P]: N extends P[K] ? K : never;
}[keyof P], undefined>;
export declare const toCamelCase: (input: string) => string;
/** Creates a clean object that doesn't have any prototype */
export declare const cleanObj: <T>(obj: T) => T;