Essential common utilities

A collection of essential utility functions for various common operations in JavaScript and TypeScript projects. The essential-common-utils package provides a set of reusable functions for string manipulation, number formatting, URL extraction, and more.

Utility Functions

1. generateRandomArrayIndex

Generates a random index for an array.

• Parameters: arrayLength (optional, default: 5)
• Returns: A random index.
• Example:

  const randomIndex = generateRandomArrayIndex(10);

2. trimAndRemoveSpaces

Trims a string and removes all spaces.

• Parameters: input (string)
• Returns: A string without spaces.
• Example:

  const result = trimAndRemoveSpaces(' Hello World ');
  // Output: "HelloWorld"

3. extractUrlsFromText

Extracts URLs from a given text.

• Parameters: text (string)
• Returns: An array of URLs found in the text.
• Example:

  const urls = extractUrlsFromText('Check out https://example.com');
  // Output: ["https://example.com"]

4. trimAndRemoveDoubleSpaces

Trims a string and removes double spaces.

• Parameters: input (string)
• Returns: A string without double spaces.
• Example:

  const result = trimAndRemoveDoubleSpaces('Hello  World');
  // Output: "Hello World"

5. trimAndRemoveUnicodeCharacter

Trims a string and removes a specific Unicode character.

• Parameters: input (string)
• Returns: A string without the Unicode character.
• Example:

  const result = trimAndRemoveUnicodeCharacter('Hello­World');
  // Output: "HelloWorld"

6. normalizeWhitespace

Normalizes whitespace in a string.

• Parameters: input (string)
• Returns: A string with normalized whitespace.
• Example:

  const result = normalizeWhitespace("Hello
  World");
  // Output: "Hello World"

7. splitTextAndGetPart

Splits a text by a delimiter and returns a specific part.

• Parameters:
  • text (string): Text to split.
  • delimiter (string): Delimiter for splitting.
  • index (number): Index of the desired part.
• Returns: The specified part of the split text.
• Example:

  const part = splitTextAndGetPart('apple,orange,banana', ',', 1);
  // Output: "orange"

8. normalizeWhitespacesAndRemoveSoftHyphen

Normalizes whitespace and removes soft hyphen characters.

• Parameters: text (string)
• Returns: A string with normalized whitespace and no soft hyphens.
• Example:

  const result = normalizeWhitespacesAndRemoveSoftHyphen('Hello ­World');
  // Output: "Hello World"

9. capitalizeFirstWord

Capitalizes the first word and makes the rest lowercase.

• Parameters: text (string)
• Returns: A string with the first word capitalized.
• Example:

  const result = capitalizeFirstWord('hello world');
  // Output: "Hello"

10. convertToEuropeFormat

Converts a number to a European format string.

• Parameters: value (number)
• Returns: A string in the European format.
• Example:

  const formatted = convertToEuropeFormat(123456.789);
  // Output: "123.456,79"

11. getCamelCaseText

Converts a string to camelCase.

• Parameters: text (string)
• Returns: A camelCase string.
• Example:

  const result = getCamelCaseText('Hello World');
  // Output: "helloWorld"

12. getPascalCaseText

Converts a string to PascalCase.

• Parameters: text (string)
• Returns: A PascalCase string.
• Example:

  const result = getPascalCaseText('hello world');
  // Output: "HelloWorld"

13. getExecutionTime

Calculates the execution time in seconds.

• Parameters: startTime (number)
• Returns: The execution time in seconds (string).
• Example:

  const start = Date.now();
  // some process
  const time = getExecutionTime(start);
  // Output: "0.12"

14. extractTextOnly

Extracts text content, removing numbers and currency symbols.

• Parameters: input (string)
• Returns: A string without numbers and currency symbols.
• Example:

  const result = extractTextOnly('Price: $123.45');
  // Output: "Price"

15. trimToTwoDecimalPlaces

Trims a number to two decimal places.

• Parameters: num (number)
• Returns: A number with two decimal places.
• Example:

  const trimmed = trimToTwoDecimalPlaces(123.456);
  // Output: 123.46

16. getMultipleUniqueIndexes

Generates multiple unique indexes for an array.

• Parameters:
  • arrayLength (number)
  • count (number)
• Returns: An array of unique indexes.
• Example:

  const indexes = getMultipleUniqueIndexes(10, 5);
  // Output: [1, 3, 5, 7, 9]

17. getRandomString

Returns a random string from the provided list.

• Parameters: items (string[]): An array of items to choose from.
• Returns: A random item from the array.
• Example:

  const randomQuote = getRandomString(['apple', 'banana', 'cherry']);
  // Output: "banana" (or any other item from the array)

18. parsePricesWithLocaleFormatting

Parses a price string with locale formatting, handling different formats like European and default parsing.

• Parameters: priceText (string)
• Returns: A number representing the parsed price.
• Example:

  const price = parsePricesWithLocaleFormatting('$1,234.56');
  // Output: 1234.56

19. textHelper

A collection of text helper functions for handling HTML entities and text normalization.

decodeHtmlEntities

Decodes HTML entities using a simple replacement approach.

• Parameters: text (string) - The text that might contain HTML entities
• Returns: The decoded text
• Example:

  const decoded = textHelper.decodeHtmlEntities('<div>Hello World</div>');
  // Output: "<div>Hello World</div>"

normalizeText

Normalizes text by decoding HTML entities and standardizing special characters.

• Parameters: text (string) - The text to normalize
• Returns: The normalized text
• Example:

  const normalized = textHelper.normalizeText('"Smart quotes" and 'apostrophes'');
  // Output: '"Smart quotes" and \'apostrophes\''

compareTexts

Compares two strings after normalization.

• Parameters:
  • actual (string) - The actual text from the page
  • expected (string) - The expected text from test data
• Returns: boolean indicating if texts match after normalization
• Example:

  const matches = textHelper.compareTexts('"Hello"', '"Hello"');
  // Output: true

Usage

To use these utilities, import them from the Common.ts file in your project. For example:

import {generateRandomArrayIndex, trimAndRemoveSpaces} from './src/Common';

const index = generateRandomArrayIndex(10);
const text = trimAndRemoveSpaces(' Hello World ');

Contributing

Contributions are welcome! If you'd like to report a bug, suggest a feature, or contribute to the codebase, feel free to open an issue or submit a pull request.

License

This package is licensed under the MIT License.