Move to es2021

[relu91]

As explained in #1267 we decided to move to a more modern js target. After #1336 everything goes pretty smooth, I'll double check next week if there is anything more to do (or please just comment below if you know more).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.37%. Comparing base (38e6abb) to head (6907c75).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1340      +/-   ##
==========================================
- Coverage   77.61%   77.37%   -0.25%     
==========================================
  Files          83       83              
  Lines       16576    16587      +11     
  Branches     1640     1589      -51     
==========================================
- Hits        12866    12834      -32     
- Misses       3652     3729      +77     
+ Partials       58       24      -34     

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[danielpeintner]

It looks everything seems to work 👍

Maybe we can remove the statement here

node-wot/packages/examples/tsconfig.json

Line 6 in 5ab4236

"target": "ES2018",

as part of this PR

[relu91]

Should I also update the examples if needed?

[danielpeintner]

Looks good 👍

In a follow-up, we might want to get rid of the whole workflow

node-wot/packages/examples/README.md

Lines 14 to 29 in 5afa858

	### Workflow
	1. Run `npm run build`
	2. Remove the following 3/4 lines in JS files of folder `dist/`
	```
	Object.defineProperty(exports, "__esModule", { value: true });
	require("wot-typescript-definitions");
	let WoT;
	let WoTHelpers;
	```
	3. Copy the according JS file(s) to
	- `<node-wot>/examples/scripts`
	- `<node-wot>/examples/testthing`