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- import { didYouMean } from '../jsutils/didYouMean.mjs';
- import { inspect } from '../jsutils/inspect.mjs';
- import { invariant } from '../jsutils/invariant.mjs';
- import { isIterableObject } from '../jsutils/isIterableObject.mjs';
- import { isObjectLike } from '../jsutils/isObjectLike.mjs';
- import { addPath, pathToArray } from '../jsutils/Path.mjs';
- import { printPathArray } from '../jsutils/printPathArray.mjs';
- import { suggestionList } from '../jsutils/suggestionList.mjs';
- import { GraphQLError } from '../error/GraphQLError.mjs';
- import {
- isInputObjectType,
- isLeafType,
- isListType,
- isNonNullType,
- } from '../type/definition.mjs';
- /**
- * Coerces a JavaScript value given a GraphQL Input Type.
- */
- export function coerceInputValue(inputValue, type, onError = defaultOnError) {
- return coerceInputValueImpl(inputValue, type, onError, undefined);
- }
- function defaultOnError(path, invalidValue, error) {
- let errorPrefix = 'Invalid value ' + inspect(invalidValue);
- if (path.length > 0) {
- errorPrefix += ` at "value${printPathArray(path)}"`;
- }
- error.message = errorPrefix + ': ' + error.message;
- throw error;
- }
- function coerceInputValueImpl(inputValue, type, onError, path) {
- if (isNonNullType(type)) {
- if (inputValue != null) {
- return coerceInputValueImpl(inputValue, type.ofType, onError, path);
- }
- onError(
- pathToArray(path),
- inputValue,
- new GraphQLError(
- `Expected non-nullable type "${inspect(type)}" not to be null.`,
- ),
- );
- return;
- }
- if (inputValue == null) {
- // Explicitly return the value null.
- return null;
- }
- if (isListType(type)) {
- const itemType = type.ofType;
- if (isIterableObject(inputValue)) {
- return Array.from(inputValue, (itemValue, index) => {
- const itemPath = addPath(path, index, undefined);
- return coerceInputValueImpl(itemValue, itemType, onError, itemPath);
- });
- } // Lists accept a non-list value as a list of one.
- return [coerceInputValueImpl(inputValue, itemType, onError, path)];
- }
- if (isInputObjectType(type)) {
- if (!isObjectLike(inputValue)) {
- onError(
- pathToArray(path),
- inputValue,
- new GraphQLError(`Expected type "${type.name}" to be an object.`),
- );
- return;
- }
- const coercedValue = {};
- const fieldDefs = type.getFields();
- for (const field of Object.values(fieldDefs)) {
- const fieldValue = inputValue[field.name];
- if (fieldValue === undefined) {
- if (field.defaultValue !== undefined) {
- coercedValue[field.name] = field.defaultValue;
- } else if (isNonNullType(field.type)) {
- const typeStr = inspect(field.type);
- onError(
- pathToArray(path),
- inputValue,
- new GraphQLError(
- `Field "${field.name}" of required type "${typeStr}" was not provided.`,
- ),
- );
- }
- continue;
- }
- coercedValue[field.name] = coerceInputValueImpl(
- fieldValue,
- field.type,
- onError,
- addPath(path, field.name, type.name),
- );
- } // Ensure every provided field is defined.
- for (const fieldName of Object.keys(inputValue)) {
- if (!fieldDefs[fieldName]) {
- const suggestions = suggestionList(
- fieldName,
- Object.keys(type.getFields()),
- );
- onError(
- pathToArray(path),
- inputValue,
- new GraphQLError(
- `Field "${fieldName}" is not defined by type "${type.name}".` +
- didYouMean(suggestions),
- ),
- );
- }
- }
- return coercedValue;
- }
- if (isLeafType(type)) {
- let parseResult; // Scalars and Enums determine if a input value is valid via parseValue(),
- // which can throw to indicate failure. If it throws, maintain a reference
- // to the original error.
- try {
- parseResult = type.parseValue(inputValue);
- } catch (error) {
- if (error instanceof GraphQLError) {
- onError(pathToArray(path), inputValue, error);
- } else {
- onError(
- pathToArray(path),
- inputValue,
- new GraphQLError(`Expected type "${type.name}". ` + error.message, {
- originalError: error,
- }),
- );
- }
- return;
- }
- if (parseResult === undefined) {
- onError(
- pathToArray(path),
- inputValue,
- new GraphQLError(`Expected type "${type.name}".`),
- );
- }
- return parseResult;
- }
- /* c8 ignore next 3 */
- // Not reachable, all possible types have been considered.
- false || invariant(false, 'Unexpected input type: ' + inspect(type));
- }
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