ast.ts

import type { AST as ESLintAST } from "eslint";
import type { Comment } from "estree";

export interface Locations {
  loc: SourceLocation;
  range: [number, number];
}

interface BaseJSONNode extends Locations {
  type: string;
}

export interface SourceLocation {
  start: Position;
  end: Position;
}

export interface Position {
  /** >= 1 */
  line: number;
  /** >= 0 */
  column: number;
}

export type JSONNode =
  | JSONProgram
  | JSONExpressionStatement
  | JSONExpression
  | JSONProperty
  | JSONIdentifier
  | JSONTemplateLiteral
  | JSONTemplateElement;
export interface JSONProgram extends BaseJSONNode {
  type: "Program";
  body: [JSONExpressionStatement];
  comments: Comment[];
  tokens: ESLintAST.Token[];
  parent: null;
}

export interface JSONExpressionStatement extends BaseJSONNode {
  type: "JSONExpressionStatement";
  expression: JSONExpression;
  parent: JSONProgram;
}

export type JSONExpression =
  | JSONArrayExpression
  | JSONObjectExpression
  | JSONLiteral
  | JSONUnaryExpression
  | JSONNumberIdentifier
  | JSONUndefinedIdentifier
  | JSONTemplateLiteral
  | JSONBinaryExpression;

export interface JSONArrayExpression extends BaseJSONNode {
  type: "JSONArrayExpression";
  elements: (JSONExpression | null)[];
  parent: JSONArrayExpression | JSONProperty | JSONExpressionStatement;
}

export interface JSONObjectExpression extends BaseJSONNode {
  type: "JSONObjectExpression";
  properties: JSONProperty[];
  parent: JSONArrayExpression | JSONProperty | JSONExpressionStatement;
}

export interface JSONProperty extends BaseJSONNode {
  type: "JSONProperty";
  key: JSONIdentifier | JSONStringLiteral | JSONNumberLiteral;
  value: JSONExpression;
  kind: "init";
  method: false;
  shorthand: false;
  computed: false;
  parent: JSONObjectExpression;
}

export interface JSONIdentifier extends BaseJSONNode {
  type: "JSONIdentifier";
  name: string;
  parent?:
    | JSONArrayExpression
    | JSONProperty
    | JSONExpressionStatement
    | JSONUnaryExpression;
}

export interface JSONNumberIdentifier extends JSONIdentifier {
  name: "Infinity" | "NaN";
}

export interface JSONUndefinedIdentifier extends JSONIdentifier {
  name: "undefined";
}
interface JSONLiteralBase extends BaseJSONNode {
  type: "JSONLiteral";
  raw: string;
  parent?:
    | JSONArrayExpression
    | JSONProperty
    | JSONExpressionStatement
    | JSONUnaryExpression
    | JSONBinaryExpression;
}

export interface JSONStringLiteral extends JSONLiteralBase {
  value: string;
  regex: null;
  bigint: null;
}
export interface JSONNumberLiteral extends JSONLiteralBase {
  value: number;
  regex: null;
  bigint: null;
}
export interface JSONKeywordLiteral extends JSONLiteralBase {
  value: boolean | null;
  regex: null;
  bigint: null;
}
export interface JSONRegExpLiteral extends JSONLiteralBase {
  value: null;
  regex: {
    pattern: string;
    flags: string;
  };
  bigint: null;
}
export interface JSONBigIntLiteral extends JSONLiteralBase {
  value: null;
  regex: null;
  bigint: string;
}

export type JSONLiteral =
  | JSONStringLiteral
  | JSONNumberLiteral
  | JSONKeywordLiteral
  | JSONRegExpLiteral
  | JSONBigIntLiteral;

export interface JSONUnaryExpression extends BaseJSONNode {
  type: "JSONUnaryExpression";
  operator: "-" | "+";
  prefix: true;
  argument: JSONNumberLiteral | JSONNumberIdentifier;
  parent: JSONArrayExpression | JSONProperty | JSONExpressionStatement;
}

export interface JSONTemplateLiteral extends BaseJSONNode {
  type: "JSONTemplateLiteral";
  quasis: [JSONTemplateElement];
  expressions: [];
  parent: JSONArrayExpression | JSONProperty | JSONExpressionStatement;
}

export interface JSONTemplateElement extends BaseJSONNode {
  type: "JSONTemplateElement";
  tail: boolean;
  value: {
    cooked: string;
    raw: string;
  };
  parent: JSONTemplateLiteral;
}

export interface JSONBinaryExpression extends BaseJSONNode {
  type: "JSONBinaryExpression";
  operator: "-" | "+" | "*" | "/" | "%" | "**";
  left: JSONNumberLiteral | JSONUnaryExpression | JSONBinaryExpression;
  right: JSONNumberLiteral | JSONUnaryExpression | JSONBinaryExpression;
  parent:
    | JSONArrayExpression
    | JSONProperty
    | JSONExpressionStatement
    | JSONUnaryExpression
    | JSONBinaryExpression;
}