ts-patch
Version:
Patch typescript to support custom transformers in tsconfig.json
182 lines • 8.07 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.patchModule = patchModule;
const typescript_1 = __importDefault(require("typescript"));
const fs_1 = __importDefault(require("fs"));
const config_1 = require("../config");
const module_1 = require("../module");
const transformers_1 = require("./transformers");
const system_1 = require("../system");
const utils_1 = require("../utils");
const patch_detail_1 = require("./patch-detail");
/* ****************************************************************************************************************** */
// region: Config
/* ****************************************************************************************************************** */
const dtsPatchSrc = '\n' + fs_1.default.readFileSync(config_1.dtsPatchFilePath, 'utf-8');
const jsPatchSrc = fs_1.default.readFileSync(config_1.modulePatchFilePath, 'utf-8');
// endregion
/* ****************************************************************************************************************** */
// region: Utils
/* ****************************************************************************************************************** */
function patchModule(tsModule, skipDts = false) {
let shouldWrap = false;
switch (tsModule.moduleName) {
case 'tsc.js':
case 'tsserver.js':
case 'tsserverlibrary.js':
case 'typescript.js':
shouldWrap = true;
}
const source = tsModule.getUnpatchedSource();
const { bodyWrapper } = source;
const printableBodyFooters = [];
const printableFooters = [];
/* Splice in full compiler functionality (if not already present) */
if (tsModule.moduleName !== 'typescript.js') {
const typescriptModule = (0, module_1.getTsModule)(tsModule.package, 'typescript.js');
const tsSource = typescriptModule.getUnpatchedSource();
/* Merge Headers & Footer */
mergeStatements(source.fileHeader, tsSource.fileHeader);
source.bodyHeader = tsSource.bodyHeader;
mergeStatements(source.fileFooter, tsSource.fileFooter);
/* Replace body */
for (let i = source.body.length - 1; i >= 0; i--) {
const bodySection = source.body[i];
if (tsSource.body.some(s => s.srcFileName === bodySection.srcFileName)) {
source.body.splice(i, 1);
}
}
source.body.unshift(...tsSource.body);
/* Fix early return */
// NOTE - This exists up until TS 5.4, but isn't there for 5.5+
if (tsModule.majorVer <= 5 && tsModule.minorVer <= 4) {
const typescriptSection = source.body.find(s => s.srcFileName === 'src/typescript/typescript.ts');
if (!typescriptSection)
throw new system_1.PatchError(`Could not find Typescript source section`);
typescriptSection.transform([transformers_1.fixTsEarlyReturnTransformer]);
printableBodyFooters.push(`return returnResult;`);
}
}
/* Patch Program */
const programSection = source.body.find(s => s.srcFileName === 'src/compiler/program.ts');
if (!programSection)
throw new system_1.PatchError(`Could not find Program source section`);
programSection.transform([transformers_1.patchCreateProgramTransformer]);
/* Add originalCreateProgram to exports */
let createProgramAdded = false;
for (const fileName of transformers_1.createProgramExportFiles) {
// As of TS 5.5, we have to handle cases of multiple instances of the same file name. In this case, we need to
// handle both src/typescript/typescript.ts
const sections = source.body.filter(s => s.srcFileName === fileName);
for (const section of sections) {
try {
section.transform([transformers_1.addOriginalCreateProgramTransformer]);
createProgramAdded = true;
}
catch (e) {
if (!(e instanceof system_1.PatchError))
throw e;
}
}
}
if (!createProgramAdded)
throw new system_1.PatchError(`Could not find any of the createProgram export files`);
/* Patch emitter (for diagnostics tools) */
const emitterSection = source.body.find(s => s.srcFileName === 'src/compiler/watch.ts');
if (!emitterSection)
throw new system_1.PatchError(`Could not find Emitter source section`);
emitterSection.transform([transformers_1.patchEmitterTransformer]);
/* Move executeCommandLine outside of closure */
if (tsModule.moduleName === 'tsc.js') {
const tscSection = source.body.find(s => s.srcFileName === 'src/tsc/tsc.ts');
if (!tscSection)
throw new system_1.PatchError(`Could not find Tsc source section`);
tscSection.transform([transformers_1.hookTscExecTransformer]);
printableFooters.push(`tsp.${config_1.execTscCmd}();`);
}
/* Print the module */
const printedJs = printModule();
/* Get Dts */
let dts;
if (!skipDts && tsModule.dtsPath) {
const dtsText = (0, utils_1.readFileWithLock)(tsModule.dtsPath);
dts =
dtsPatchSrc + '\n' +
dtsText;
}
/* Get JS */
const libraryName = tsModule.moduleName.replace(/\.js$/, '');
const patchDetail = patch_detail_1.PatchDetail.fromModule(tsModule, printedJs);
const js = patchDetail.toHeader() + '\n' +
jsPatchSrc + '\n' +
`tsp.currentLibrary = '${libraryName}';\n` +
printedJs;
return { dts, js };
function getPrintList() {
const list = [];
let indentLevel = 0;
/* File Header */
list.push([source.fileHeader, indentLevel]);
/* Body Wrapper Open */
if (shouldWrap) {
if (bodyWrapper)
list.push([`\n${bodyWrapper.start}\n`, indentLevel]);
indentLevel = 2;
}
/* Body Header*/
list.push([source.bodyHeader, indentLevel]);
/* Body */
source.body.forEach(section => list.push([section, indentLevel]));
/* Body Footers */
printableBodyFooters.forEach(f => list.push([f, indentLevel]));
/* Body Wrapper Close */
if (shouldWrap) {
indentLevel = 0;
if (bodyWrapper)
list.push([`\n${bodyWrapper.end}\n`, indentLevel]);
}
/* File Footer */
list.push([source.fileFooter, indentLevel]);
printableFooters.forEach(f => list.push([f, indentLevel]));
return list;
}
function printModule() {
const printer = typescript_1.default.createPrinter(config_1.defaultNodePrinterOptions);
let outputStr = ``;
for (const [item, indentLevel] of getPrintList()) {
let printed;
let addedIndent;
if (item === undefined)
continue;
if (typeof item === 'string') {
printed = item;
}
else {
printed = item.print(printer);
if (indentLevel && item.indentLevel < indentLevel) {
addedIndent = indentLevel - item.indentLevel;
}
}
if (addedIndent)
printed = printed.replace(/^/gm, ' '.repeat(addedIndent));
outputStr += printed;
}
return outputStr;
}
function mergeStatements(baseSection, addedSection) {
if (!baseSection || !addedSection) {
if (addedSection)
baseSection = addedSection;
return;
}
const baseSourceFile = baseSection.getSourceFile();
const addedSourceFile = addedSection.getSourceFile();
const transformer = (0, transformers_1.createMergeStatementsTransformer)(baseSourceFile, addedSourceFile);
baseSection.transform([transformer]);
}
}
// endregion
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