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53 lines
1.6 KiB
TypeScript
53 lines
1.6 KiB
TypeScript
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// Loaded from https://deno.land/x/graphql_deno@v15.0.0/lib/utilities/valueFromASTUntyped.js
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import inspect from '../jsutils/inspect.js';
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import invariant from '../jsutils/invariant.js';
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import keyValMap from '../jsutils/keyValMap.js';
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import { Kind } from '../language/kinds.js';
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/**
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* Produces a JavaScript value given a GraphQL Value AST.
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*
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* Unlike `valueFromAST()`, no type is provided. The resulting JavaScript value
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* will reflect the provided GraphQL value AST.
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*
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* | GraphQL Value | JavaScript Value |
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* | -------------------- | ---------------- |
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* | Input Object | Object |
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* | List | Array |
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* | Boolean | Boolean |
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* | String / Enum | String |
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* | Int / Float | Number |
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* | Null | null |
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*
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*/
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export function valueFromASTUntyped(valueNode, variables) {
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switch (valueNode.kind) {
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case Kind.NULL:
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return null;
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case Kind.INT:
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return parseInt(valueNode.value, 10);
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case Kind.FLOAT:
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return parseFloat(valueNode.value);
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case Kind.STRING:
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case Kind.ENUM:
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case Kind.BOOLEAN:
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return valueNode.value;
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case Kind.LIST:
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return valueNode.values.map(node => valueFromASTUntyped(node, variables));
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case Kind.OBJECT:
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return keyValMap(valueNode.fields, field => field.name.value, field => valueFromASTUntyped(field.value, variables));
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case Kind.VARIABLE:
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return variables?.[valueNode.name.value];
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} // Not reachable. All possible value nodes have been considered.
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invariant(false, 'Unexpected value node: ' + inspect(valueNode));
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}
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