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Introduce forward references in pretty printer #6069

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merged 1 commit into from
Apr 25, 2018
Merged

Introduce forward references in pretty printer #6069

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9 changes: 9 additions & 0 deletions packages/pretty-format/src/plugins/react_element.js
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ import {

const elementSymbol = Symbol.for('react.element');
const fragmentSymbol = Symbol.for('react.fragment');
const forwardRefSymbol = Symbol.for('react.forward_ref');

// Given element.props.children, or subtree during recursive traversal,
// return flattened array of children.
Expand All @@ -42,6 +43,14 @@ const getType = element => {
if (element.type === fragmentSymbol) {
return 'React.Fragment';
}
if (element.type === forwardRefSymbol) {
const functionName =
element.type.render.displayName || element.type.render.name || '';

return functionName !== ''
? 'ForwardRef(' + functionName + ')'
: 'ForwardRef';
}
return 'UNDEFINED';
};

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