Typescript Object destructuring results in "Property assignment expected."

Question

I am transitioning a project from Babel to Typescript and receive the following compiler error:

error TS1136: Property assignment expected.

from code that looks like this:

var auth = {...this.props.auth};

This code previously worked fine under Babel, but causes the error above when attempting to compile via Typescript. Is object destructuring different in Typescript?

shouldn't it be var { auth } = this.props;?

Icepickle
– Icepickle

2016-01-19 15:22:10 +00:00
Commented Jan 19, 2016 at 15:22 — Icepickle
– Icepickle, Commented Jan 19, 2016 at 15:22
Isn't this ES7 syntax?

MinusFour
– MinusFour

2016-01-19 15:27:25 +00:00
Commented Jan 19, 2016 at 15:27 — MinusFour
– MinusFour, Commented Jan 19, 2016 at 15:27

MinusFour · Accepted Answer · 2017-01-10 00:02:02Z

8

The feature you are looking for is Object spread/rest operators (proposed for ES7). It looks like it's planned but not yet implemented:

We want to wait for the proposal to reach Stage 3 before addressing this.

More info here.

Edit: The proposal is in stage-3. We'll likely see it drafted on ES2018 (ES9). Support has been added to TypeScript as well (starting from 2.1).

edited Jan 10, 2017 at 0:02

answered Jan 19, 2016 at 15:37

MinusFour

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