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- /**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * strict-local
- * @format
- */
- "use strict";
- /* eslint-disable no-redeclare */
- // A type representing 0-based offsets.
- // A type representing 1-based offsets.
- // Add two offsets or numbers.
- function add(a, b) {
- return a + b;
- } // Subtract a number or 0-based offset from a 1/0-based offset.
- function sub(a, b) {
- return a - b;
- } // Get the underlying number of a 0-based offset, casting away the opaque type.
- function get0(x) {
- return x;
- } // Get the underlying number of a 1-based offset, casting away the opaque type.
- function get1(x) {
- return x;
- } // Add 1 to a 0-based offset, thus converting it to 1-based.
- function add1(x) {
- return x + 1;
- } // Subtract 1 from a 1-based offset, thus converting it to 0-based.
- function sub1(x) {
- return x - 1;
- } // Negate a 0-based offset.
- function neg(x) {
- return -x;
- } // Cast a number to a 0-based offset.
- function add0(x) {
- return x;
- } // Increment a 0-based offset.
- function inc(x) {
- return x + 1;
- }
- module.exports = {
- add,
- get0,
- get1,
- add1,
- sub1,
- sub,
- neg,
- add0,
- inc
- };
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