graphql
Version:
A Query Language and Runtime which can target any service.
316 lines • 12.8 kB
JavaScript
import { inspect } from "../jsutils/inspect.mjs";
import { isObjectLike } from "../jsutils/isObjectLike.mjs";
import { GraphQLError } from "../error/GraphQLError.mjs";
import { Kind } from "../language/kinds.mjs";
import { print } from "../language/printer.mjs";
import { defaultScalarValueToLiteral } from "../utilities/valueToLiteral.mjs";
import { GraphQLScalarType } from "./definition.mjs";
export const GRAPHQL_MAX_INT = 2147483647;
export const GRAPHQL_MIN_INT = -2147483648;
export const GraphQLInt = new GraphQLScalarType({
name: 'Int',
description: 'The `Int` scalar type represents non-fractional signed whole numeric values. Int can represent values between -(2^31) and 2^31 - 1.',
coerceOutputValue(outputValue) {
const coercedValue = coerceOutputValueObject(outputValue);
if (typeof coercedValue === 'number') {
return coerceIntFromNumber(coercedValue);
}
if (typeof coercedValue === 'boolean') {
return coercedValue ? 1 : 0;
}
if (typeof coercedValue === 'string') {
return coerceIntFromString(coercedValue);
}
if (typeof coercedValue === 'bigint') {
return coerceIntFromBigInt(coercedValue);
}
throw new GraphQLError(`Int cannot represent non-integer value: ${inspect(coercedValue)}`);
},
coerceInputValue(inputValue) {
if (typeof inputValue === 'number') {
return coerceIntFromNumber(inputValue);
}
if (typeof inputValue === 'bigint') {
return coerceIntFromBigInt(inputValue);
}
throw new GraphQLError(`Int cannot represent non-integer value: ${inspect(inputValue)}`);
},
coerceInputLiteral(valueNode) {
if (valueNode.kind !== Kind.INT) {
throw new GraphQLError(`Int cannot represent non-integer value: ${print(valueNode)}`, { nodes: valueNode });
}
const num = parseInt(valueNode.value, 10);
if (num > GRAPHQL_MAX_INT || num < GRAPHQL_MIN_INT) {
throw new GraphQLError(`Int cannot represent non 32-bit signed integer value: ${valueNode.value}`, { nodes: valueNode });
}
return num;
},
valueToLiteral(value) {
if (((typeof value === 'number' && Number.isInteger(value)) ||
typeof value === 'bigint') &&
value <= GRAPHQL_MAX_INT &&
value >= GRAPHQL_MIN_INT) {
return { kind: Kind.INT, value: String(value) };
}
},
});
export const GraphQLFloat = new GraphQLScalarType({
name: 'Float',
description: 'The `Float` scalar type represents signed double-precision fractional values as specified by [IEEE 754](https://en.wikipedia.org/wiki/IEEE_floating_point).',
coerceOutputValue(outputValue) {
const coercedValue = coerceOutputValueObject(outputValue);
if (typeof coercedValue === 'number') {
return coerceFloatFromNumber(coercedValue);
}
if (typeof coercedValue === 'boolean') {
return coercedValue ? 1 : 0;
}
if (typeof coercedValue === 'string') {
return coerceFloatFromString(coercedValue);
}
if (typeof coercedValue === 'bigint') {
return coerceFloatFromBigInt(coercedValue);
}
throw new GraphQLError(`Float cannot represent non numeric value: ${inspect(coercedValue)}`);
},
coerceInputValue(inputValue) {
if (typeof inputValue === 'number') {
return coerceFloatFromNumber(inputValue);
}
if (typeof inputValue === 'bigint') {
return coerceFloatFromBigInt(inputValue);
}
throw new GraphQLError(`Float cannot represent non numeric value: ${inspect(inputValue)}`);
},
coerceInputLiteral(valueNode) {
if (valueNode.kind !== Kind.FLOAT && valueNode.kind !== Kind.INT) {
throw new GraphQLError(`Float cannot represent non numeric value: ${print(valueNode)}`, { nodes: valueNode });
}
return parseFloat(valueNode.value);
},
valueToLiteral(value) {
const literal = defaultScalarValueToLiteral(value);
if (literal.kind === Kind.FLOAT || literal.kind === Kind.INT) {
return literal;
}
},
});
export const GraphQLString = new GraphQLScalarType({
name: 'String',
description: 'The `String` scalar type represents textual data, represented as UTF-8 character sequences. The String type is most often used by GraphQL to represent free-form human-readable text.',
coerceOutputValue(outputValue) {
const coercedValue = coerceOutputValueObject(outputValue);
if (typeof coercedValue === 'string') {
return coercedValue;
}
if (typeof coercedValue === 'boolean') {
return coercedValue ? 'true' : 'false';
}
if (typeof coercedValue === 'number') {
return coerceStringFromNumber(coercedValue);
}
if (typeof coercedValue === 'bigint') {
return String(coercedValue);
}
throw new GraphQLError(`String cannot represent value: ${inspect(outputValue)}`);
},
coerceInputValue(inputValue) {
if (typeof inputValue !== 'string') {
throw new GraphQLError(`String cannot represent a non string value: ${inspect(inputValue)}`);
}
return inputValue;
},
coerceInputLiteral(valueNode) {
if (valueNode.kind !== Kind.STRING) {
throw new GraphQLError(`String cannot represent a non string value: ${print(valueNode)}`, { nodes: valueNode });
}
return valueNode.value;
},
valueToLiteral(value) {
const literal = defaultScalarValueToLiteral(value);
if (literal.kind === Kind.STRING) {
return literal;
}
},
});
export const GraphQLBoolean = new GraphQLScalarType({
name: 'Boolean',
description: 'The `Boolean` scalar type represents `true` or `false`.',
coerceOutputValue(outputValue) {
const coercedValue = coerceOutputValueObject(outputValue);
if (typeof coercedValue === 'boolean') {
return coercedValue;
}
if (typeof coercedValue === 'number') {
return coerceBooleanFromNumber(coercedValue);
}
if (typeof coercedValue === 'bigint') {
return coercedValue !== 0n;
}
throw new GraphQLError(`Boolean cannot represent a non boolean value: ${inspect(coercedValue)}`);
},
coerceInputValue(inputValue) {
if (typeof inputValue !== 'boolean') {
throw new GraphQLError(`Boolean cannot represent a non boolean value: ${inspect(inputValue)}`);
}
return inputValue;
},
coerceInputLiteral(valueNode) {
if (valueNode.kind !== Kind.BOOLEAN) {
throw new GraphQLError(`Boolean cannot represent a non boolean value: ${print(valueNode)}`, { nodes: valueNode });
}
return valueNode.value;
},
valueToLiteral(value) {
const literal = defaultScalarValueToLiteral(value);
if (literal.kind === Kind.BOOLEAN) {
return literal;
}
},
});
export const GraphQLID = new GraphQLScalarType({
name: 'ID',
description: 'The `ID` scalar type represents a unique identifier, often used to refetch an object or as key for a cache. The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When expected as an input type, any string (such as `"4"`) or integer (such as `4`) input value will be accepted as an ID.',
coerceOutputValue(outputValue) {
const coercedValue = coerceOutputValueObject(outputValue);
if (typeof coercedValue === 'string') {
return coercedValue;
}
if (typeof coercedValue === 'number') {
return coerceIDFromNumber(coercedValue);
}
if (typeof coercedValue === 'bigint') {
return String(coercedValue);
}
throw new GraphQLError(`ID cannot represent value: ${inspect(outputValue)}`);
},
coerceInputValue(inputValue) {
if (typeof inputValue === 'string') {
return inputValue;
}
if (typeof inputValue === 'number') {
return coerceIDFromNumber(inputValue);
}
if (typeof inputValue === 'bigint') {
return String(inputValue);
}
throw new GraphQLError(`ID cannot represent value: ${inspect(inputValue)}`);
},
coerceInputLiteral(valueNode) {
if (valueNode.kind !== Kind.STRING && valueNode.kind !== Kind.INT) {
throw new GraphQLError('ID cannot represent a non-string and non-integer value: ' +
print(valueNode), { nodes: valueNode });
}
return valueNode.value;
},
valueToLiteral(value) {
if (typeof value === 'string') {
return /^-?(?:0|[1-9][0-9]*)$/.test(value)
? { kind: Kind.INT, value }
: { kind: Kind.STRING, value, block: false };
}
if (typeof value === 'number') {
return { kind: Kind.INT, value: coerceIDFromNumber(value) };
}
if (typeof value === 'bigint') {
return { kind: Kind.INT, value: String(value) };
}
},
});
export const specifiedScalarTypes = Object.freeze([
GraphQLString,
GraphQLInt,
GraphQLFloat,
GraphQLBoolean,
GraphQLID,
]);
export function isSpecifiedScalarType(type) {
return specifiedScalarTypes.some(({ name }) => type.name === name);
}
function coerceOutputValueObject(outputValue) {
if (isObjectLike(outputValue)) {
if (typeof outputValue.valueOf === 'function') {
const valueOfResult = outputValue.valueOf();
if (!isObjectLike(valueOfResult)) {
return valueOfResult;
}
}
if (typeof outputValue.toJSON === 'function') {
return outputValue.toJSON();
}
}
return outputValue;
}
function coerceIntFromNumber(value) {
if (!Number.isInteger(value)) {
throw new GraphQLError(`Int cannot represent non-integer value: ${inspect(value)}`);
}
if (value > GRAPHQL_MAX_INT || value < GRAPHQL_MIN_INT) {
throw new GraphQLError(`Int cannot represent non 32-bit signed integer value: ${inspect(value)}`);
}
return value;
}
function coerceIntFromString(value) {
if (value === '') {
throw new GraphQLError(`Int cannot represent non-integer value: ${inspect(value)}`);
}
const num = Number(value);
if (!Number.isInteger(num)) {
throw new GraphQLError(`Int cannot represent non-integer value: ${inspect(value)}`);
}
if (num > GRAPHQL_MAX_INT || num < GRAPHQL_MIN_INT) {
throw new GraphQLError(`Int cannot represent non 32-bit signed integer value: ${inspect(value)}`);
}
return num;
}
function coerceIntFromBigInt(value) {
if (value > GRAPHQL_MAX_INT || value < GRAPHQL_MIN_INT) {
throw new GraphQLError(`Int cannot represent non 32-bit signed integer value: ${String(value)}`);
}
return Number(value);
}
function coerceFloatFromNumber(value) {
if (!Number.isFinite(value)) {
throw new GraphQLError(`Float cannot represent non numeric value: ${inspect(value)}`);
}
return value;
}
function coerceFloatFromString(value) {
if (value === '') {
throw new GraphQLError(`Float cannot represent non numeric value: ${inspect(value)}`);
}
const num = Number(value);
if (!Number.isFinite(num)) {
throw new GraphQLError(`Float cannot represent non numeric value: ${inspect(value)}`);
}
return num;
}
function coerceFloatFromBigInt(coercedValue) {
const num = Number(coercedValue);
if (!Number.isFinite(num)) {
throw new GraphQLError(`Float cannot represent non numeric value: ${inspect(coercedValue)} (value is too large)`);
}
if (BigInt(num) !== coercedValue) {
throw new GraphQLError(`Float cannot represent non numeric value: ${inspect(coercedValue)} (value would lose precision)`);
}
return num;
}
function coerceStringFromNumber(value) {
if (!Number.isFinite(value)) {
throw new GraphQLError(`String cannot represent value: ${inspect(value)}`);
}
return String(value);
}
function coerceBooleanFromNumber(value) {
if (!Number.isFinite(value)) {
throw new GraphQLError(`Boolean cannot represent a non boolean value: ${inspect(value)}`);
}
return value !== 0;
}
function coerceIDFromNumber(value) {
if (!Number.isInteger(value)) {
throw new GraphQLError(`ID cannot represent value: ${inspect(value)}`);
}
return String(value);
}
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