simple-isbn

Small and simple utility with no dependencies to validate and convert ISBN 10 and ISBN 13.

Install

npm install simple-isbn

Usage

const ISBN = require('simple-isbn').isbn;

ISBN.toIsbn13('951309524X');
ISBN.toIsbn10('9789513095246');

API

ISBN.toIsbn13(isbn)

Converts ISBN 10 to ISBN 13 or cleans up ISBN 13. Throws TypeError if not a valid ISBN.

Parameters:

• isbn, ISBN 10 or ISBN 13, may include hyphens or spaces

Returns:

ISBN 13 with no hyphens or spaces as a string.

ISBN.toIsbn10(isbn)

Converts ISBN 13 to ISBN 10 or cleans up ISBN 10. Throws TypeError if not a valid ISBN.

Parameters:

• isbn, ISBN 10 or ISBN 13, may include hyphens or spaces

Returns:

ISBN 10 with no hyphens or spaces as a string.

ISBN.calculateIsbn13Code(partial)

Calculates check digit for first 12 digits of ISBN 13.

Parameters:

• partial, 12 digits

Returns:

Check digit for ISBN 13.

ISBN.calculateIsbn10Code(partial)

Calculates check digit for first 9 digits of ISBN 10.

Parameters:

• partial, 9 digits

Returns:

Check digit for ISBN 10.

ISBN.isValidIsbn10(isbn)

Validates ISBN 10. Doesn't accept hyphens or spaces, ISBN needs to contain only digits and a check digit.

Parameters:

• isbn, string to check

Returns:

true on valid ISBN 10 and false otherwise.

ISBN.isValidIsbn13(isbn)

Validates ISBN 13. Doesn't accept hyphens or spaces, ISBN needs to contain only digits and a check digit.

Parameters:

• isbn, string to check

Returns:

true on valid ISBN 13 and false otherwise.

ISBN.isValidIsbn(isbn)

Validates an ISBN. Accepts extra hyphens and spaces, but not any other characters.

Parameters:

• isbn, string to check

Returns:

true on valid ISBN 13 and false otherwise.