eiac/xterm.js
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Convert a lot of top level consts to const enums

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This commit is contained in:
Daniel Imms
2026-05-02 06:44:25 -07:00
parent 5c47e6dd9a
commit 80debafa11
19 changed files with 304 additions and 282 deletions
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src/common/InputHandler.ts
+18 -20
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@@ -41,12 +41,13 @@ const GLEVEL: { [key: string]: number } = { '(': 0, ')': 1, '*': 2, '+': 3, '-':
/**
* Max length of the UTF32 input buffer. Real memory consumption is 4 times higher.
*/
const MAX_PARSEBUFFER_LENGTH = 131072;
/**
* Limit length of title and icon name stacks.
*/
const STACK_LIMIT = 10;
const enum Constants {
MAX_PARSEBUFFER_LENGTH = 131072,
/** Limit length of title and icon name stacks. */
STACK_LIMIT = 10,
// create a warning log if an async handler takes longer than the limit (in ms)
SLOW_ASYNC_LIMIT = 5000
}
// map params to window option
function paramToWindowOption(n: number, opts: IWindowOptions): boolean {
@@ -85,9 +86,6 @@ export enum WindowsOptionsReportType {
GET_CELL_SIZE_PIXELS = 1
}
// create a warning log if an async handler takes longer than the limit (in ms)
const SLOW_ASYNC_LIMIT = 5000;
// Work variables to avoid garbage collection
let $temp = 0;
@@ -393,7 +391,7 @@ export class InputHandler extends Disposable implements IInputHandler {
if (this._logService.logLevel <= LogLevelEnum.WARN) {
let slowTimeout: ReturnType<typeof setTimeout> | undefined;
const slowPromise = new Promise<never>((_res, rej) => {
slowTimeout = setTimeout(() => rej('#SLOW_TIMEOUT'), SLOW_ASYNC_LIMIT);
slowTimeout = setTimeout(() => rej('#SLOW_TIMEOUT'), Constants.SLOW_ASYNC_LIMIT);
});
Promise.race([p, slowPromise])
.then(() => {
@@ -407,7 +405,7 @@ export class InputHandler extends Disposable implements IInputHandler {
if (err !== '#SLOW_TIMEOUT') {
throw err;
}
console.warn(`async parser handler taking longer than ${SLOW_ASYNC_LIMIT} ms`);
console.warn(`async parser handler taking longer than ${Constants.SLOW_ASYNC_LIMIT} ms`);
});
}
}
@@ -445,8 +443,8 @@ export class InputHandler extends Disposable implements IInputHandler {
cursorStartX = this._parseStack.cursorStartX;
cursorStartY = this._parseStack.cursorStartY;
this._parseStack.paused = false;
if (data.length > MAX_PARSEBUFFER_LENGTH) {
start = this._parseStack.position + MAX_PARSEBUFFER_LENGTH;
if (data.length > Constants.MAX_PARSEBUFFER_LENGTH) {
start = this._parseStack.position + Constants.MAX_PARSEBUFFER_LENGTH;
}
}
@@ -463,8 +461,8 @@ export class InputHandler extends Disposable implements IInputHandler {
// resize input buffer if needed
if (this._parseBuffer.length < data.length) {
if (this._parseBuffer.length < MAX_PARSEBUFFER_LENGTH) {
this._parseBuffer = new Uint32Array(Math.min(data.length, MAX_PARSEBUFFER_LENGTH));
if (this._parseBuffer.length < Constants.MAX_PARSEBUFFER_LENGTH) {
this._parseBuffer = new Uint32Array(Math.min(data.length, Constants.MAX_PARSEBUFFER_LENGTH));
}
}
@@ -475,9 +473,9 @@ export class InputHandler extends Disposable implements IInputHandler {
}
// process big data in smaller chunks
if (data.length > MAX_PARSEBUFFER_LENGTH) {
for (let i = start; i < data.length; i += MAX_PARSEBUFFER_LENGTH) {
const end = i + MAX_PARSEBUFFER_LENGTH < data.length ? i + MAX_PARSEBUFFER_LENGTH : data.length;
if (data.length > Constants.MAX_PARSEBUFFER_LENGTH) {
for (let i = start; i < data.length; i += Constants.MAX_PARSEBUFFER_LENGTH) {
const end = i + Constants.MAX_PARSEBUFFER_LENGTH < data.length ? i + Constants.MAX_PARSEBUFFER_LENGTH : data.length;
const len = (typeof data === 'string')
? this._stringDecoder.decode(data.substring(i, end), this._parseBuffer)
: this._utf8Decoder.decode(data.subarray(i, end), this._parseBuffer);
@@ -2955,13 +2953,13 @@ export class InputHandler extends Disposable implements IInputHandler {
case 22: // PushTitle
if (second === 0 || second === 2) {
this._windowTitleStack.push(this._windowTitle);
if (this._windowTitleStack.length > STACK_LIMIT) {
if (this._windowTitleStack.length > Constants.STACK_LIMIT) {
this._windowTitleStack.shift();
}
}
if (second === 0 || second === 1) {
this._iconNameStack.push(this._iconName);
if (this._iconNameStack.length > STACK_LIMIT) {
if (this._iconNameStack.length > Constants.STACK_LIMIT) {
this._iconNameStack.shift();
}
}