grafast/dist/stringifyPayload.js

Cutting edge GraphQL planning and execution engine

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.stringifyPayload = stringifyPayload;
function stringifyPayload(payload, outputDataAsString) {
    if (!outputDataAsString || typeof payload.data !== "string") {
        return JSON.stringify(payload);
    }
    let str = "{";
    let first = true;
    if (payload.incremental) {
        throw new Error("Haven't implemented incremental yet");
    }
    if (payload.errors !== undefined) {
        if (!first)
            str += ",";
        first = false;
        str += `"errors":${JSON.stringify(payload.errors)}`;
    }
    if (payload.data === undefined) {
        // noop
    }
    else if (payload.data === null) {
        if (!first)
            str += ",";
        first = false;
        str += `"data":null`;
    }
    else if (typeof payload.data === "string") {
        if (!first)
            str += ",";
        first = false;
        str += `"data":${payload.data}`;
    }
    else {
        throw new Error(`Expected data to be null, undefined, or a JSON string`);
    }
    if (payload.extensions !== undefined) {
        if (!first)
            str += ",";
        first = false;
        str += `"extensions":${JSON.stringify(payload.extensions)}`;
    }
    if (payload.label !== undefined) {
        if (!first)
            str += ",";
        first = false;
        str += `"label":${JSON.stringify(payload.label)}`;
    }
    if (payload.hasNext !== undefined) {
        if (!first)
            str += ",";
        first = false;
        str += `"hasNext":${JSON.stringify(payload.hasNext)}`;
    }
    str += "}";
    return str;
}
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