use reflow to migrate from flow to typescript

scm-ui/ui-components/src/forms/Textarea.tsx

@@ -0,0 +1,56 @@
+import React from 'react';
+import LabelWithHelpIcon from './LabelWithHelpIcon';
+
+export type SelectItem = {
+  value: string;
+  label: string;
+};
+
+type Props = {
+  name?: string;
+  label?: string;
+  placeholder?: SelectItem[];
+  value?: string;
+  autofocus?: boolean;
+  onChange: (value: string, name?: string) => void;
+  helpText?: string;
+  disabled?: boolean;
+};
+
+class Textarea extends React.Component<Props> {
+  field: HTMLTextAreaElement | null | undefined;
+
+  componentDidMount() {
+    if (this.props.autofocus && this.field) {
+      this.field.focus();
+    }
+  }
+
+  handleInput = (event: SyntheticInputEvent<HTMLTextAreaElement>) => {
+    this.props.onChange(event.target.value, this.props.name);
+  };
+
+  render() {
+    const { placeholder, value, label, helpText, disabled } = this.props;
+
+    return (
+      <div className="field">
+        <LabelWithHelpIcon label={label} helpText={helpText} />
+        <div className="control">
+          <textarea
+            className="textarea"
+            ref={input => {
+              this.field = input;
+            }}
+            placeholder={placeholder}
+            onChange={this.handleInput}
+            value={value}
+            disabled={!!disabled}
+          />
+        </div>
+      </div>
+    );
+  }
+}
+
+export default Textarea;