@graphql-tools/graphql/esm/language/source.js

Fork of GraphQL.js

var _a;
import { devAssert } from '../jsutils/devAssert.js';
const isSourceSymbol = Symbol.for('Source');
/**
 * A representation of source input to GraphQL. The `name` and `locationOffset` parameters are
 * optional, but they are useful for clients who store GraphQL documents in source files.
 * For example, if the GraphQL input starts at line 40 in a file named `Foo.graphql`, it might
 * be useful for `name` to be `"Foo.graphql"` and location to be `{ line: 40, column: 1 }`.
 * The `line` and `column` properties in `locationOffset` are 1-indexed.
 */
export class Source {
    constructor(body, name = 'GraphQL request', locationOffset = { line: 1, column: 1 }) {
        this[_a] = true;
        this.body = body;
        this.name = name;
        this.locationOffset = locationOffset;
        devAssert(this.locationOffset.line > 0, 'line in locationOffset is 1-indexed and must be positive.');
        devAssert(this.locationOffset.column > 0, 'column in locationOffset is 1-indexed and must be positive.');
    }
    get [(_a = isSourceSymbol, Symbol.toStringTag)]() {
        return 'Source';
    }
}
/**
 * Test if the given value is a Source object.
 *
 * @internal
 */
export function isSource(source) {
    return typeof source === 'object' && source != null && isSourceSymbol in source;
}