Add Node 14 to "engines" for all dapps

What is the Problem Being Solved?

In our dapps, if the Node version is below 14, we get a mysterious error message:

katesills@kates-mbp dapp-card-store-2 % agoric install
(node:65896) ExperimentalWarning: The ESM module loader is experimental.
file:///Users/katesills/code/agoric-sdk/packages/marshal/src/marshal.js:6
import { Nat } from '@agoric/nat';
         ^^^
SyntaxError: The requested module '@agoric/nat' does not provide an export named 'Nat'
    at ModuleJob._instantiate (internal/modules/esm/module_job.js:92:21)
    at async ModuleJob.run (internal/modules/esm/module_job.js:107:20)
    at async Loader.import (internal/modules/esm/loader.js:176:24)

We need to improve the error message to point users to the appropriate Node version.

Description of the Design

Add

  "engines": {
    "node": ">=14.15.0"
  },

to the package.json in the root folder of the dapps.

This gives a much better error message:

error dapp-card-store@0.0.1: The engine "node" is incompatible with this module. Expected version ">=14". Got "13.12.0"
error Commands cannot run with an incompatible environment.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Security Considerations

None

Test Plan

None

List of dapps:

• dapp-card-store
• dapp-treasury
• dapp-fungible-faucet
• testnet-load-generator
• documentation
• dapp-otc
• dapp-nft-drop
• dapp-loan
• dapp-token-economy
• dapp-simple-exchange
• dapp-autoswap
• dapp-oracle
• dapp-pegasus

[namangirdhar16]

@katelynsills i guess i understand what needs to be done here, for the sake of confirmation i would like to ask do i just need to go in each project folder and update the package.json file with node version greater than 14?

[turadg]

Note that our minimum Node is presently 14.17.0. When we get to this we should also update other references to the required version. https://github.com/Agoric/agoric-sdk/pull/4460#issuecomment-1030422275