github-pages-deploy-action/node_modules/graphql/utilities/astFromValue.mjs
2020-03-06 22:45:40 -05:00

181 lines
5.0 KiB
JavaScript

import isFinite from "../polyfills/isFinite.mjs";
import arrayFrom from "../polyfills/arrayFrom.mjs";
import objectValues from "../polyfills/objectValues.mjs";
import inspect from "../jsutils/inspect.mjs";
import invariant from "../jsutils/invariant.mjs";
import isObjectLike from "../jsutils/isObjectLike.mjs";
import isCollection from "../jsutils/isCollection.mjs";
import { Kind } from "../language/kinds.mjs";
import { GraphQLID } from "../type/scalars.mjs";
import { isLeafType, isEnumType, isInputObjectType, isListType, isNonNullType } from "../type/definition.mjs";
/**
* Produces a GraphQL Value AST given a JavaScript object.
* Function will match JavaScript/JSON values to GraphQL AST schema format
* by using suggested GraphQLInputType. For example:
*
* astFromValue("value", GraphQLString)
*
* A GraphQL type must be provided, which will be used to interpret different
* JavaScript values.
*
* | JSON Value | GraphQL Value |
* | ------------- | -------------------- |
* | Object | Input Object |
* | Array | List |
* | Boolean | Boolean |
* | String | String / Enum Value |
* | Number | Int / Float |
* | Mixed | Enum Value |
* | null | NullValue |
*
*/
export function astFromValue(value, type) {
if (isNonNullType(type)) {
var astValue = astFromValue(value, type.ofType);
if ((astValue === null || astValue === void 0 ? void 0 : astValue.kind) === Kind.NULL) {
return null;
}
return astValue;
} // only explicit null, not undefined, NaN
if (value === null) {
return {
kind: Kind.NULL
};
} // undefined
if (value === undefined) {
return null;
} // Convert JavaScript array to GraphQL list. If the GraphQLType is a list, but
// the value is not an array, convert the value using the list's item type.
if (isListType(type)) {
var itemType = type.ofType;
if (isCollection(value)) {
var valuesNodes = []; // Since we transpile for-of in loose mode it doesn't support iterators
// and it's required to first convert iteratable into array
for (var _i2 = 0, _arrayFrom2 = arrayFrom(value); _i2 < _arrayFrom2.length; _i2++) {
var item = _arrayFrom2[_i2];
var itemNode = astFromValue(item, itemType);
if (itemNode != null) {
valuesNodes.push(itemNode);
}
}
return {
kind: Kind.LIST,
values: valuesNodes
};
}
return astFromValue(value, itemType);
} // Populate the fields of the input object by creating ASTs from each value
// in the JavaScript object according to the fields in the input type.
if (isInputObjectType(type)) {
if (!isObjectLike(value)) {
return null;
}
var fieldNodes = [];
for (var _i4 = 0, _objectValues2 = objectValues(type.getFields()); _i4 < _objectValues2.length; _i4++) {
var field = _objectValues2[_i4];
var fieldValue = astFromValue(value[field.name], field.type);
if (fieldValue) {
fieldNodes.push({
kind: Kind.OBJECT_FIELD,
name: {
kind: Kind.NAME,
value: field.name
},
value: fieldValue
});
}
}
return {
kind: Kind.OBJECT,
fields: fieldNodes
};
}
/* istanbul ignore else */
if (isLeafType(type)) {
// Since value is an internally represented value, it must be serialized
// to an externally represented value before converting into an AST.
var serialized = type.serialize(value);
if (serialized == null) {
return null;
} // Others serialize based on their corresponding JavaScript scalar types.
if (typeof serialized === 'boolean') {
return {
kind: Kind.BOOLEAN,
value: serialized
};
} // JavaScript numbers can be Int or Float values.
if (typeof serialized === 'number' && isFinite(serialized)) {
var stringNum = String(serialized);
return integerStringRegExp.test(stringNum) ? {
kind: Kind.INT,
value: stringNum
} : {
kind: Kind.FLOAT,
value: stringNum
};
}
if (typeof serialized === 'string') {
// Enum types use Enum literals.
if (isEnumType(type)) {
return {
kind: Kind.ENUM,
value: serialized
};
} // ID types can use Int literals.
if (type === GraphQLID && integerStringRegExp.test(serialized)) {
return {
kind: Kind.INT,
value: serialized
};
}
return {
kind: Kind.STRING,
value: serialized
};
}
throw new TypeError("Cannot convert value to AST: ".concat(inspect(serialized), "."));
} // Not reachable. All possible input types have been considered.
/* istanbul ignore next */
invariant(false, 'Unexpected input type: ' + inspect(type));
}
/**
* IntValue:
* - NegativeSign? 0
* - NegativeSign? NonZeroDigit ( Digit+ )?
*/
var integerStringRegExp = /^-?(?:0|[1-9][0-9]*)$/;