initial commit. phase 1 complete

frontend/node_modules/pretty-format/plugins/ReactTestComponent.js

@@ -0,0 +1,58 @@
+'use strict';
+
+const printString = require('../printString');
+
+const reactTestInstance = Symbol.for('react.test.json');
+
+function printChildren(children, print, indent, opts) {
+  return children.map(child => printInstance(child, print, indent, opts)).join(opts.edgeSpacing);
+}
+
+function printProps(props, print, indent, opts) {
+  return Object.keys(props).sort().map(name => {
+    const prop = props[name];
+    let printed = print(prop);
+
+    if (typeof prop !== 'string') {
+      if (printed.indexOf('\n') !== -1) {
+        printed = '{' + opts.edgeSpacing + indent(indent(printed) + opts.edgeSpacing + '}');
+      } else {
+        printed = '{' + printed + '}';
+      }
+    }
+
+    return opts.spacing + indent(name + '=') + printed;
+  }).join('');
+}
+
+function printInstance(instance, print, indent, opts) {
+  if (typeof instance == 'number') {
+    return print(instance);
+  } else if (typeof instance === 'string') {
+    return printString(instance);
+  }
+
+  let result = '<' + instance.type;
+
+  if (instance.props) {
+    result += printProps(instance.props, print, indent, opts);
+  }
+
+  if (instance.children) {
+    const children = printChildren(instance.children, print, indent, opts);
+    result += '>' + opts.edgeSpacing + indent(children) + opts.edgeSpacing + '</' + instance.type + '>';
+  } else {
+    result += ' />';
+  }
+
+  return result;
+}
+
+module.exports = {
+  test(object) {
+    return object && object.$$typeof === reactTestInstance;
+  },
+  print(val, print, indent, opts) {
+    return printInstance(val, print, indent, opts);
+  }
+};