I downloaded the example but when I run the project shows this error

[joaodematejr]

undefined is not an object (evaluating '_react.PropTypes.oneOfType')

camera.js:46:26
loadModuleImplementation
require.js:320:6
guardedLoadModule
require.js:214:36
metroRequire
require.js:136:24

consultasCamera.js:12
loadModuleImplementation
require.js:320:6
guardedLoadModule
require.js:214:36
metroRequire
require.js:136:24

App.js:8
loadModuleImplementation
require.js:320:6
guardedLoadModule
require.js:214:36
metroRequire
require.js:136:24

index.js:4
loadModuleImplementation
require.js:320:6
guardedLoadModule
require.js:207:45
metroRequire
require.js:136:24
global code

static propTypes = {
    ...View.propTypes,
    aspect: PropTypes.oneOfType([
        PropTypes.string,
        PropTypes.number
    ]),
    captureQuality: PropTypes.oneOfType([
        PropTypes.string,
        PropTypes.number
    ]),
    country: PropTypes.string,
    onPlateRecognized: PropTypes.func,
    plateOutlineColor: PropTypes.string,
    showPlateOutline: PropTypes.bool,
    rotateMode: PropTypes.oneOfType([
        PropTypes.string,
        PropTypes.number
    ]),
    torchMode: PropTypes.oneOfType([
        PropTypes.string,
        PropTypes.number
    ]),
    touchToFocus: PropTypes.bool,
};

[RobertSasak]

#24

PropTypes are not part of react any more. There is already a pull request for it. In a meanwhile simply rewrite imports of PropTypes in camera.js

[joaodematejr]

Get resolved by importing inside the file import PropTypes from 'prop-types'; camera.js

[johansantoso]

The release version is so old, try to fetch the code from master