react-functional-select

react-functional-select

This lightweight package delivers ultimate performance for complex dropdown/select web component scenarios - it effortlessy handles searching, scrolling and keying even when working with data sets numbering in the tens of thousandes. It is powered by react-window (for data virtualization) and styled-components (for flexible, performant styling). In addition, it is built entirely using React Hooks and FunctionComponents.

While raw performance and minimal package size were the primary objectives, it is built with an advanced API that should cover the vast majority of use-cases. The API's functionality was largely inspired by react-select, which is one of the best examples you will find of a flexible and complete API designed to handle a very specific, and usually painful, problem that web developers encounter. Essentially, my aim was to narrow the API's focus down to critical/common/performance pieces of functionality - using a functional approach that allowed for low-code, high-performance solutions to these use-cases.

Installation (Including peer dependencies)

# npm
npm i react-window react-styled-components react-functional-select

# Yarn
yarn add react-window react-styled-components react-functional-select

Usage

• Demo
• Source code

Example (BasicProps.story.tsx)

/*** ...IMPORTS... ***/

type CityOption = {
  readonly id: number;
  readonly city: string;
  readonly state: string;
};

const SelectedLabelText = styled.span`
  margin-left: 0px;
  font-weight: 600;
`;

const SelectedCode = styled(Code)`
  font-weight: 400;
  font-size: 0.875em;
`;

const _options: CityOption[] = [
  { id: 1, city: 'Austin', state: 'TX' },
  { id: 2, city: 'Denver', state: 'CO' },
  { id: 3, city: 'Chicago', state: 'IL' },
  { id: 4, city: 'Phoenix', state: 'AZ' },
  { id: 5, city: 'Houston', state: 'TX' },
];

const BasicProps: React.FC = () => {
  const [isInvalid, setIsInvalid] = useState(false);
  const [isLoading, setIsLoading] = useState(false);
  const [isDisabled, setIsDisabled] = useState(false);
  const [isClearable, setIsClearable] = useState(true);
  const [isSearchable, setIsSearchable] = useState(true);
  const [selectedOption, setSelectedOption] = useState<CityOption | null>(null);

  const getOptionValue = useCallback((option: CityOption): number => {
    return option.id;
  }, []);

  const getOptionLabel = useCallback((option: CityOption): string => {
    return `${option.city}, ${option.state}`;
  }, []);
  
  const onOptionChange = useCallback((option: CityOption | null): void => {
    setSelectedOption(option);
  }, []);

  useEffect(() => {
    isDisabled && setIsInvalid(false);
  }, [isDisabled]);

  return (
    <Container>
      <Title>Basic Properties</Title>
      <Hr />
      <Paragraph>Description of story...</Paragraph>
      <Paragraph>Description of story continued...</Paragraph>
      <SubTitle>Demo</SubTitle>
      <Hr />
      <Card>
        <CardHeader>
          <CheckboxGroup>
            <Checkbox
              label='Searchable'
              checked={isSearchable}
              onCheck={setIsSearchable}
            />
            <Checkbox
              label='Clearable'
              checked={isClearable}
              onCheck={setIsClearable}
            />
            <Checkbox
              label='Disabled'
              checked={isDisabled}
              onCheck={setIsDisabled}
            />
            <Checkbox
              label='Invalid'
              checked={isInvalid}
              readOnly={isDisabled}
              onCheck={setIsInvalid}
            />
            <Checkbox
              label='Loading'
              checked={isLoading}
              onCheck={setIsLoading}
            />
            <Label>
              <SelectedLabelText>Selected Option: </SelectedLabelText>
              <SelectedCode>{selectedOption ? JSON.stringify(selectedOption) : 'NULL'}</SelectedCode>
            </Label>
          </CheckboxGroup>
        </CardHeader>
        <CardBody>
          <SelectContainer>
            <Select
              options={_options}
              isLoading={isLoading}
              isInvalid={isInvalid}
              isDisabled={isDisabled}
              isClearable={isClearable}
              isSearchable={isSearchable}
              onOptionChange={onOptionChange}
              getOptionValue={getOptionValue}
              getOptionLabel={getOptionLabel}
            />
          </SelectContainer>
        </CardBody>
      </Card>
    </Container>
  );
};

TODO: hook up test-runner and scripts; finish writing unit tests leveraging @testing-library/react framework; complete documentation for props/api