41 lines
1.2 KiB
Plaintext
41 lines
1.2 KiB
Plaintext
// @flow strict
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import devAssert from '../jsutils/devAssert';
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import defineToStringTag from '../jsutils/defineToStringTag';
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type Location = {|
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line: number,
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column: number,
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|};
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/**
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* A representation of source input to GraphQL.
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* `name` and `locationOffset` are optional. They are useful for clients who
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* store GraphQL documents in source files; for example, if the GraphQL input
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* starts at line 40 in a file named Foo.graphql, it might be useful for name to
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* be "Foo.graphql" and location to be `{ line: 40, column: 0 }`.
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* line and column in locationOffset are 1-indexed
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*/
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export class Source {
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body: string;
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name: string;
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locationOffset: Location;
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constructor(body: string, name?: string, locationOffset?: Location): void {
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this.body = body;
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this.name = name || 'GraphQL request';
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this.locationOffset = locationOffset || { line: 1, column: 1 };
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devAssert(
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this.locationOffset.line > 0,
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'line in locationOffset is 1-indexed and must be positive',
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);
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devAssert(
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this.locationOffset.column > 0,
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'column in locationOffset is 1-indexed and must be positive',
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);
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}
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}
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// Conditionally apply `[Symbol.toStringTag]` if `Symbol`s are supported
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defineToStringTag(Source);
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