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https://github.com/bilawalsidhu/gods-eye-view.git
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81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
import { parsers } from 'prettier/plugins/babel.mjs';
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const browserGlobals = new Set([
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'window',
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'document',
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'navigator',
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'HTMLElement',
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'HTMLCanvasElement',
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'Image',
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'Audio',
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'localStorage',
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'sessionStorage',
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'requestAnimationFrame',
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'cancelAnimationFrame',
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'getComputedStyle',
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]);
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/** Inspect literal module dependencies and browser-platform references without executing code. */
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export function analyzeModule(source) {
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const imports = [];
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const browser = new Set();
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function walk(node, parent, field) {
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if (!node || typeof node !== 'object') return;
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if (
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[
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'ImportDeclaration',
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'ExportNamedDeclaration',
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'ExportAllDeclaration',
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'ImportExpression',
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].includes(node.type) &&
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node.source
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) {
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if (node.source.type !== 'StringLiteral')
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throw new Error(
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'Computed module imports are not allowed in runtime code',
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);
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imports.push(node.source.value);
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}
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if (node.type === 'CallExpression' && node.callee?.name === 'require')
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throw new Error('Runtime modules must use ES imports');
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if (node.type === 'Identifier' && browserGlobals.has(node.name)) {
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const property =
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(parent?.type === 'MemberExpression' ||
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parent?.type === 'OptionalMemberExpression') &&
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field === 'property' &&
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!parent.computed;
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const key =
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['ObjectProperty', 'ObjectMethod', 'ClassMethod'].includes(
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parent?.type,
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) &&
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field === 'key' &&
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!parent.computed;
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const declaration =
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field === 'id' ||
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field === 'params' ||
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parent?.type?.startsWith('Import');
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if (!property && !key && !declaration) browser.add(node.name);
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}
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if (
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['MemberExpression', 'OptionalMemberExpression'].includes(node.type) &&
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['globalThis', 'self'].includes(node.object?.name)
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) {
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const name = node.computed ? node.property?.value : node.property?.name;
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if (browserGlobals.has(name)) browser.add(name);
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}
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for (const [key, value] of Object.entries(node)) {
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if (['loc', 'comments', 'tokens', 'extra'].includes(key)) continue;
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if (Array.isArray(value))
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value.forEach((child) => walk(child, node, key));
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else if (value && typeof value === 'object') walk(value, node, key);
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}
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}
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walk(parsers.babel.parse(source));
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return { imports, browser: [...browser] };
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}
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/** Return static imports, literal dynamic imports and re-exports. */
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export function moduleImports(source) {
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return analyzeModule(source).imports;
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}
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