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rOACCT/node_modules/@babel/preset-modules/src/plugins/transform-safari-block-shadowing/index.js
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index.js
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			/**
			* Fixes block-shadowed let/const bindings in Safari 10/11.
			* https://kangax.github.io/compat-table/es6/#test-let_scope_shadow_resolution
			*/
			export default function({ types: t }) {
			return {
			name: "transform-safari-block-shadowing",
			visitor: {
			VariableDeclarator(path) {
			// the issue only affects let and const bindings:
			const kind = path.parent.kind;
			if (kind !== "let" && kind !== "const") return;

			// ignore non-block-scoped bindings:
			const block = path.scope.block;
			if (t.isFunction(block) \|\| t.isProgram(block)) return;

			const bindings = t.getOuterBindingIdentifiers(path.node.id);
			for (const name of Object.keys(bindings)) {
			let scope = path.scope;

			// ignore parent bindings (note: impossible due to let/const?)
			if (!scope.hasOwnBinding(name)) continue;

			// check if shadowed within the nearest function/program boundary
			while ((scope = scope.parent)) {
			if (scope.hasOwnBinding(name)) {
			path.scope.rename(name);
			break;
			}
			if (t.isFunction(scope.block) \|\| t.isProgram(scope.block)) {
			break;
			}
			}
			}
			},
			},
			};
			}