regex101: ES6 Imports/exports/dynamic: Getting the paths

1st Alternative(?:(?<=(?:import|export)[^`'"]*from\s+[`'"])(?<path1>[^`'"]+)(?=(?:'|"|`)))

Non-Capturing Group(?:(?<=(?:import|export)[^`'"]*from\s+[`'"])(?<path1>[^`'"]+)(?=(?:'|"|`)))

Positive Lookbehind(?<=(?:import|export)[^`'"]*from\s+[`'"])

Non-Capturing Group(?:import|export)

1st Alternativeimport

importthe literal text import (case sensitive)

2nd Alternativeexport

exportthe literal text export (case sensitive)

Negated Character Class[^`'"]*

*matches any number of characters outside the set below:

`the literal ` (96₁₀ / 140₈ / 60₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

fromthe literal text from (case sensitive)

\s+any whitespace character, repeated at least once

Character Class[`'"]

`the literal ` (96₁₀ / 140₈ / 60₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group path1(?<path1>[^`'"]+)

Negated Character Class[^`'"]+

+matches at least one character outside the set below:

`the literal ` (96₁₀ / 140₈ / 60₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Positive Lookahead(?=(?:'|"|`))

Non-Capturing Group(?:'|"|`)

1st Alternative'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

3rd Alternative`

`the literal ` (96₁₀ / 140₈ / 60₁₆)

2nd Alternative(?:\b(?:import|export)(?:\s+|\s*\(\s*)[`'"](?<path2>[^`'"]+)[`'"])

Non-Capturing Group(?:\b(?:import|export)(?:\s+|\s*\(\s*)[`'"](?<path2>[^`'"]+)[`'"])

\ban ASCII word boundary

Non-Capturing Group(?:import|export)

1st Alternativeimport

importthe literal text import (case sensitive)

2nd Alternativeexport

exportthe literal text export (case sensitive)

Non-Capturing Group(?:\s+|\s*\(\s*)

1st Alternative\s+

\s+any whitespace character, repeated at least once

2nd Alternative\s*\(\s*

\s*any whitespace character, repeated any number of times

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\s*any whitespace character, repeated any number of times

Character Class[`'"]

`the literal ` (96₁₀ / 140₈ / 60₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group path2(?<path2>[^`'"]+)

Negated Character Class[^`'"]+

Character Class[`'"]

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

(?:(?<=(?:import|export)[^`'"]*from\s+[`'"])(?<path1>[^`'"]+)(?=(?:'|"|`)))|(?:\b(?:import|export)(?:\s+|\s*\(\s*)[`'"](?<path2>[^`'"]+)[`'"])

New

import { defaultTemplateProcessor } from './lib/default-template-processor.js';
import { SVGTemplateResult, TemplateResult } from './lib/template-result.js';
export { DefaultTemplateProcessor, defaultTemplateProcessor } from './lib/default-template-processor.js';
export { directive, isDirective } from './lib/directive.js';
export { removeNodes, reparentNodes } from './lib/dom.js';
export { noChange, nothing } from './lib/part.js';
export { AttributeCommitter, AttributePart, BooleanAttributePart, EventPart, isIterable, isPrimitive, NodePart, PropertyCommitter, PropertyPart } from './lib/parts.js';
export { parts, render } from './lib/render.js';
export { templateCaches, templateFactory } from './lib/template-factory.js';
export { TemplateInstance } from './lib/template-instance.js';
export { SVGTemplateResult, TemplateResult } from './lib/template-result.js';
export { createMarker, isTemplatePartActive, Template } from './lib/template.js';
import { render } from 'lit-html/lib/shady-render.js';
import { UpdatingElement } from './lib/updating-element.js';
export * from './lib/updating-element.js';
export * from './lib/decorators.js';
export { html, svg, TemplateResult, SVGTemplateResult } from 'lit-html/lit-html.js';
import { supportsAdoptingStyleSheets } from './lib/css-tag.js';
export * from './lib/css-tag.js';
import { LitElement } from 'lit-element';
import { IronMeta } from '@polymer/iron-meta/iron-meta.js';
import { whenOnline } from 'hadron-core/lib/utils/async.js';
import { apiUrl, apiVersion } from '../../src/config.js';
import { importModule, dynamicImportAvailable } from '../../src/dynamic-imports-polyfill.js';
import observeProperties from 'hadron-core/lib/utils/object-property-observer.js';
export { version };
import { ElementMixin, version } from './lib/mixins/element-mixin.js';
export { html } from './lib/utils/html-tag.js';

class Foo {

  constructor() {
    import(`foo.js`);
	import(`${foo}`);
	import('bar.js');
  }  

}

Regular Expressions 101

Regular Expression

Extraction