react-native/Libraries/Utilities/createStrictShapeTypeChecke...

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
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*
* @providesModule createStrictShapeTypeChecker
* @flow
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*/
'use strict';
var ReactPropTypeLocationNames = require('react/lib/ReactPropTypeLocationNames');
var ReactPropTypesSecret = require('react/lib/ReactPropTypesSecret');
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var invariant = require('fbjs/lib/invariant');
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var merge = require('merge');
function createStrictShapeTypeChecker(
shapeTypes: {[key: string]: ReactPropsCheckType}
): ReactPropsChainableTypeChecker {
function checkType(isRequired, props, propName, componentName, location?) {
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if (!props[propName]) {
if (isRequired) {
invariant(
false,
`Required object \`${propName}\` was not specified in ` +
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`\`${componentName}\`.`
);
}
return;
}
var propValue = props[propName];
var propType = typeof propValue;
var locationName =
location && ReactPropTypeLocationNames[location] || '(unknown)';
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if (propType !== 'object') {
invariant(
false,
`Invalid ${locationName} \`${propName}\` of type \`${propType}\` ` +
`supplied to \`${componentName}\`, expected \`object\`.`
);
}
// We need to check all keys in case some are required but missing from
// props.
var allKeys = merge(props[propName], shapeTypes);
for (var key in allKeys) {
var checker = shapeTypes[key];
if (!checker) {
invariant(
false,
`Invalid props.${propName} key \`${key}\` supplied to \`${componentName}\`.` +
`\nBad object: ` + JSON.stringify(props[propName], null, ' ') +
`\nValid keys: ` + JSON.stringify(Object.keys(shapeTypes), null, ' ')
);
}
var error = checker(propValue, key, componentName, location, null, ReactPropTypesSecret);
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if (error) {
invariant(
false,
error.message +
`\nBad object: ` + JSON.stringify(props[propName], null, ' ')
);
}
}
}
function chainedCheckType(
props: {[key: string]: any},
propName: string,
componentName: string,
location?: string
): ?Error {
return checkType(false, props, propName, componentName, location);
}
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chainedCheckType.isRequired = checkType.bind(null, true);
return chainedCheckType;
}
module.exports = createStrictShapeTypeChecker;