| 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)); |
| } |