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250acbf33c
Use new import JSDoc syntax for Typescript annotations GitOrigin-RevId: 782456d637fc8f2de6163b5d70fabf06c1d74964
37 lines
623 B
JavaScript
37 lines
623 B
JavaScript
// @ts-check
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/**
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* @import { CommentOp, DeleteOp, InsertOp, Op, RetainOp } from './types'
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*/
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/**
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* @param {Op} op
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* @returns {op is InsertOp}
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*/
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export function isInsert(op) {
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return 'i' in op && op.i != null
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}
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/**
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* @param {Op} op
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* @returns {op is RetainOp}
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*/
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export function isRetain(op) {
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return 'r' in op && op.r != null
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}
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/**
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* @param {Op} op
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* @returns {op is DeleteOp}
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*/
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export function isDelete(op) {
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return 'd' in op && op.d != null
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}
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/**
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* @param {Op} op
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* @returns {op is CommentOp}
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*/
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export function isComment(op) {
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return 'c' in op && op.c != null && 't' in op && op.t != null
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}
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