@virtualstate/examples/lib/examples/graph/tokens.js

import { createToken } from "@virtualstate/fringe";
import { DefaultDataFactory, isQuadLike } from "@opennetwork/rdf-data-model";
export const NamedNodeSymbol = Symbol.for("NamedNode");
export const NamedNode = createToken(NamedNodeSymbol, {
    termType: "NamedNode"
});
export const BlankNodeSymbol = Symbol.for("BlankNode");
export const BlankNode = createToken(BlankNodeSymbol, {
    termType: "BlankNode"
});
export const LiteralSymbol = Symbol.for("Literal");
export const Literal = createToken(LiteralSymbol, {
    termType: "Literal",
    ...DefaultDataFactory.literal("")
});
export const QuadSymbol = Symbol.for("Quad");
export const Quad = createToken(QuadSymbol, {});
export const Triple = createToken(QuadSymbol, {
    termType: "Quad",
    value: "",
});
export function isQuadInstanceToken(token) {
    return isQuadLike(token.options);
}
export function assertQuadInstanceToken(token) {
    if (!isQuadInstanceToken(token)) {
        throw new Error("Expected QuadInstanceToken");
    }
}
export const DefaultGraphSymbol = Symbol.for("@virtualstate/examples/DefaultGraph");
export const DefaultGraph = createToken(DefaultGraphSymbol, {
    termType: "DefaultGraph",
    value: ""
});
export const VariableSymbol = Symbol.for("@virtualstate/examples/Variable");
export const Variable = createToken(VariableSymbol, {
    termType: "Variable"
});
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