@apollo/client

Version:
A fully-featured caching GraphQL client.
www.apollographql.com/docs/react/
42 lines (41 loc) • 1.48 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isStreamField = isStreamField;
const graphql_1 = require("graphql");
const sizes_js_1 = require("../caching/sizes.cjs");
const memoize_js_1 = require("./memoize.cjs");
/**
* @internal
* 
* @deprecated This is an internal API and should not be used directly. This can be removed or changed at any time.
*/
const memoized = (0, memoize_js_1.memoize)(function (field) {
    const directive = field.directives?.find((directive) => directive.name.value === "stream");
    if (!directive)
        return false;
    for (const arg of directive.arguments ?? []) {
        if (arg.name.value === "if") {
            switch (arg.value.kind) {
                case graphql_1.Kind.BOOLEAN:
                    return arg.value.value;
                case graphql_1.Kind.VARIABLE: {
                    const varName = arg.value.name.value;
                    return (variables) => !!variables?.[varName];
                }
            }
        }
    }
    return true;
}, {
    max: sizes_js_1.cacheSizes["isStreamField"] || 2000 /* defaultCacheSizes["isStreamField"] */,
});
/**
* @internal
* 
* @deprecated This is an internal API and should not be used directly. This can be removed or changed at any time.
*/
function isStreamField(field, variables) {
    const result = memoized(field);
    return typeof result === "function" ? result(variables) : result;
}
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