@pawel-up/jexl/lib/Expression.d.ts

Javascript Expression Language: Powerful context-based expression parser and evaluator

import { Grammar, ASTNode } from './grammar.js';
export type Context = Record<string, unknown>;
export default class Expression<R = unknown> {
    _grammar: Grammar;
    _exprStr: string;
    _ast: ASTNode | null;
    constructor(grammar: Grammar, exprStr: string);
    compile(): this;
    eval(context?: Context): Promise<R>;
    evalAsString(context?: Context): Promise<string>;
    evalAsNumber(context?: Context): Promise<number>;
    evalAsBoolean(context?: Context): Promise<boolean>;
    evalAsArray(context?: Context): Promise<(R extends (infer E)[] ? E : R)[]>;
    evalAsEnum(context: Context | undefined, allowedValues: readonly R[]): Promise<R | undefined>;
    evalWithDefault(context: Context | undefined, defaultValue: R): Promise<R>;
    _eval(context: Context): Promise<R>;
    _getAst(): ASTNode | null;
}
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