function proxy (context, content, selectors, parents, line, column, length, id, depth, at) {
		for (var i = 0, out = content, next; i < plugged; ++i) {
			switch (next = plugins[i].call(stylis, context, out, selectors, parents, line, column, length, id, depth, at)) {
				case void 0:
				case false:
				case true:
				case null: {
					break
				}
				default: {
					out = next
				}
			}
		}

		switch (out) {
			case void 0:
			case false:
			case true:
			case null:
			case content: {
				break
			}
			default: {
				return out
			}
		}
	}
Proxy

@param {number} context
@param {string} content
@param {Array<string>} selectors
@param {Array<string>} parents
@param {number} line
@param {number} column
@param {number} length
@param {number} id
@param {number} depth
@param {number} at
@return {(string|void|*)}