Migration

The full list of changes is in the changelog. This page lists what usually breaks first when moving from 0.2.x to 0.3.

Method calls that changed

Before	After
fraction.frac	fraction.asFrac (as*** getters select a form)
polynom.isMultiVariable	polynom.hasCrossTerm() (predicates are methods)
fraction.isRational() on integers	now true for any exact rational, integers included; hasFractionalPart() is the old one
equation.isolate() returning false	equation.canIsolate() first, then isolate(), which throws MathError
polynom.inverse() === undefined	throws MathError
new Fraction()	now equals 0

Behaviors that changed silently

Some changes are not reported by the TypeScript compiler, and untyped JavaScript will not report them either:

• polynom.monoms returns copies. Modify a polynomial with its methods or by assigning polynom.monoms = [...].
• Invalid arguments now throw InvalidArgumentError in the random generators, before any draw.
• Random.equation draws fractional solutions in [-5, 5] by default. Use solution: {range: 10} for a wider interval.
• Random.item on an empty list throws instead of returning null.

Typed errors

Plain Error instances are replaced by typed errors. Replace tests on e.message by instanceof checks.