@create-figma-plugin/build/lib/utilities/type-check/type-check-watch.js

Build a Figma/FigJam plugin/widget

import { log } from '@create-figma-plugin/common';
import { temporaryFile } from 'tempy';
import ts from 'typescript';
import { trackElapsedTime } from '../track-elapsed-time.js';
import { filterTypeScriptDiagnostics } from './filter-typescript-diagnostics.js';
import { formatTypeScriptErrorMessage } from './format-typescript-error-message.js';
import { readTsConfig } from './read-tsconfig.js';
export function typeCheckWatch() {
    const tsConfig = readTsConfig();
    const compilerOptions = {
        ...tsConfig.compilerOptions,
        configFilePath: tsConfig.tsConfigFilePath,
        noEmit: true
    };
    let getElapsedTime;
    const host = ts.createWatchCompilerHost(tsConfig.tsConfigFilePath, {
        ...compilerOptions,
        incremental: true,
        tsBuildInfoFile: temporaryFile()
    }, ts.sys, ts.createSemanticDiagnosticsBuilderProgram, function reportDiagnostic(diagnostic) {
        const diagnostics = filterTypeScriptDiagnostics([diagnostic]);
        if (diagnostics.length === 0) {
            return;
        }
        log.error(formatTypeScriptErrorMessage(diagnostics));
    }, function reportWatchStatus(diagnostic) {
        if (diagnostic.code === 6031 ||
            diagnostic.code === 6032) {
            getElapsedTime = trackElapsedTime();
            log.info('Typechecking...');
            return;
        }
        if (diagnostic.code === 6194) {
            log.success(`Typechecked in ${getElapsedTime()}`, {
                clearPreviousLine: true
            });
            log.info('Watching...');
            return;
        }
    });
    const watchProgram = ts.createWatchProgram(host);
    return function () {
        watchProgram.close();
    };
}
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