| 1 | const isIterable = obj => typeof obj[Symbol.iterator] === 'function';
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| 2 |
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| 3 | function optionalIterable(props, propName, componentName) {
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| 4 | const prop = props[propName];
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| 5 | const type = typeof prop;
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| 6 |
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| 7 | if (prop != null && !isIterable(prop)) {
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| 8 | return new Error(
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| 9 | `Invalid prop \`${propName}\` of type \`${type}\` supplied to \`${componentName}\`, expected \`iterable\`.`
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| 10 | );
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| 11 | }
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| 12 | }
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| 13 |
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| 14 | function requiredIterable(props, propName, componentName) {
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| 15 | const prop = props[propName];
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| 16 | const type = typeof prop;
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| 17 |
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| 18 | if (prop == null || !isIterable(prop)) {
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| 19 | return new Error(
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| 20 | `Invalid prop \`${propName}\` of type \`${type}\` supplied to \`${componentName}\`, expected \`iterable\`.`
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| 21 | );
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| 22 | }
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| 23 | }
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| 24 |
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| 25 | optionalIterable.isRequired = requiredIterable;
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| 26 |
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| 27 | export default optionalIterable;
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