Function Program

src/lib/transform-fast-rest.js:69–91

(path, state)

		name: 'transform-fast-rest',
		visitor: {
			Program(path, state) {
				const childState = new Map();
				const useHelper = state.opts.helper === true; // defaults to false

				if (!useHelper) {
					let inlineHelper;
					if (state.opts.literal === false) {
						inlineHelper = template.expression.ast`Array.prototype.slice`;
					} else {
						inlineHelper = template.expression.ast`[].slice`;
					}
					childState.set('slice', inlineHelper);
				}

				path.traverse(VISITOR, childState);

				const name = childState.get('slice');
				if (name && useHelper) {
					const helper = slice({ IDENT: name });
					t.addComment(helper.declarations[0].init, 'leading', '#__PURE__');
					path.unshiftContainer('body', helper);
				}
			},
		},
	};
}