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import { Option } from 'fp-ts/Option'
import { constructors, Union } from './utils'
type _ = never
export type index = number
export type Literal = Union<{
String: string
RegExp: RegExp
Number: number
Boolean: boolean
}>
export const Literal = constructors<Literal>()
export type Expr = Union<{
Start: _
End: _
Optional: { expr: Expr }
OneOrMore: { expr: Expr }
MinMax: { expr: Expr, min: index, max: index }
ZeroOrMore: { expr: Expr }
AnyItem: _
Or: { exprs: Expr[] }
AnyString: _
AnyNumber: _
AnyBool: _
Truthy: _
Falsey: _
Group: { exprs: Expr[] }
PropertyMatch: { name: string; expr: Expr }
Literal: Literal
Sequence: { exprs: Expr[] }
}>
export const Expr = constructors<Expr>()
export type ListExpr = [Option<Expr>, Expr, Option<Expr>]
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