Parser, Tree class roadmap

[MajorLift]

1. Parser

A. Expand Import Statement support

a) Static Imports

• For static import statements with namespace or default specifiers, only add members that are used in the document.

import foo from "mod.js"
import * as foo from "mod.js"

• Module imports for side effects only

import '/modules/my-module.js';
import 'http:example.com\pears.js';

b) Require Statements

• Support namespaces and member expressions

const foo = require("./module"); ... ; <foo.component />;

• Support invocations and method/member calls

const foo = require("./module")();
const foo = require("./module").method(arg);

c) Dynamic imports

• Support AwaitExpression

const foo = await import("./module")

• Support Promise.resolve()

const foo = Promise.resolve(import("./module"))

• Support .then() chains

import("./module").then(mod => mod.loadPage())

• Support non-literal specifiers in module name

import(`/modules/module-${index}.js`)

B. Implement Export Statement parser

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/export#syntax

C. Support Barrel files

• 1) Recognize barrel files
• 2) Parse export statements in barrel file
• 3) Parse export statements for components in each barrel file entry.

D. Support more path types

• Module not processed correctly if directory name in path contains "." oslabs-beta/sapling#108
• Support TypeScript path aliases
• Support for webpack alias  #9

E. Increase Babel type guard coverage

• .getJSXChildren(), .getJSXProps(), .checkForRedux() methods
• Redux hooks support oslabs-beta/sapling#107
• Nested Import CallExpression in ArrowFunctionExpression body.

const foo = React.lazy(() => import('./module'));

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2. Tree

• Consolidate Tree and Node data class/interfaces for parser, serialized workspace cache, and webview.
• Encapsulation for class members