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spdx-compare

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spdx-compare

compare SPDX license expressions

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What is spdx-compare?

The spdx-compare npm package is used to compare SPDX license identifiers. It helps in determining if two SPDX license identifiers are equivalent or if one is a subset of the other. This is particularly useful in license compliance and management scenarios.

What are spdx-compare's main functionalities?

Compare two SPDX license identifiers for equality

This feature allows you to compare two SPDX license identifiers to check if they are exactly the same. In this example, it compares 'MIT' with 'MIT' and returns true.

const spdxCompare = require('spdx-compare');

const license1 = 'MIT';
const license2 = 'MIT';

const areEqual = spdxCompare(license1, license2);
console.log(`Are the licenses equal? ${areEqual}`);

Compare two SPDX license identifiers for subset relationship

This feature allows you to check if one SPDX license identifier is a subset of another. In this example, it checks if 'MIT' is a subset of 'MIT OR Apache-2.0' and returns true.

const spdxCompare = require('spdx-compare');

const license1 = 'MIT';
const license2 = 'MIT OR Apache-2.0';

const isSubset = spdxCompare.subset(license1, license2);
console.log(`Is the first license a subset of the second? ${isSubset}`);

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Package last updated on 07 Mar 2018

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