Refactor using typescript, while supporting esm/cjs

[rxliuli]

The specific changes are as follows

• build: Remove xo --fix from the format command, it will change the semantics of the typescript code, ref、
  
• build: Update gitignore to exclude the .idea directory automatically generated by the IDE and the dist directory generated after packaging
• build: Modify packaging related functions to rollup, and support cjs/esm at the same time
• refactor: Refactor the test file to ts, use jest instead of tape, modify tsconfig to support default import
• refactor: Refactor the code into ts implementation and use String.prototype.repeat() instead of repeat-string npm package

[wooorm]

Appreciate you working on markdown-table but:

• Being ESM-only is intentional
• I also intentionally use JS and tape instead of TS and Jest

Your fix of duplicate delimiterStart is a nice catch, and using String#repeat too. I would appreciate those fixes on their own!

[rxliuli]

Being ESM-only is intentional

Why? This will cause it to explode when used in jest tests(I used import), and it is not difficult to support cjs. . .

I also intentionally use JS and tape instead of TS and Jest

Obviously, .d.ts is already provided in the project, why not refactor to ts in one go? Again, this is not a trouble, my modification is only to add MarkdownTableOption

[wooorm]

Why? This will cause it to explode when used in jest tests(I used import), and it is not difficult to support cjs. . .

• See this post, linked in the readme: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c
• Dual packaging has problems: https://nodejs.org/api/packages.html#packages_dual_package_hazard, TypeError: parser is not a function remarkjs/react-markdown#518
• Jest can be configured to support ESM, and in any case: it’s a problem for them to solve. They’ve had time

Obviously, .d.ts is already provided in the project, why not refactor to ts in one go?

Because I also had all my projects in CoffeeScript and its a ton of work to change language every couple of years.
I like JavaScript. I want to write JavaScript. I want code to run not to compile. I dislike that one company owns typescript

[rxliuli]

jest esm support is not complete, I will re-release a new package...

ref: https://jestjs.io/docs/ecmascript-modules