Calculate logical expressions in string.

• Installation
• Usage
• API
  • L.eval(pattern, variables)
• Versioning
• Copyright and License

npm install -S logic-string

const L = require('logic-string');

L.eval('true && false');  // false
L.eval('true || false');  // true

L.eval('a && b', {        // false
    a: true,
    b: false,
});
L.eval('a || b', {        // true
    a: true,
    b: false,
});

L.eval('!false');         // true
L.eval('!true');          // false

L.eval('(a && b) || c', { // true
    a: true,
    b: true,
    c: false,
});

L.eval('( a && b )||c', { // true
    a: true,
    b: true,
    c: false,
});

/**
 * It is based on `eval` function. You should be in charge of the security with injection risks.
 *
 * @param {String} pattern
 * @param {Object} [variables]
 * @return {Boolean}
 */
(pattern, variables) => Boolean

The versioning follows the rules of SemVer 2.0.0.

BUT, anything may have BREAKING CHANGES at ANY TIME when major version is zero (0.y.z), which is for initial development and the public API should not be considered stable.

For more information on SemVer, please visit http:https://semver.org/.

Copyright (c) 2017 ADoyle. The project is licensed under the Apache License Version 2.0.

See the LICENSE file for the specific language governing permissions and limitations under the License.

See the NOTICE file distributed with this work for additional information regarding copyright ownership.