generate-file-webpack-plugin
Version:
General purpose Webpack plugin for generating files.
174 lines (173 loc) • 8.39 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var fs = require("fs");
var path = require("path");
function generate(options) {
return new GenerateFileWebpackPlugin(options);
}
var GenerateFileWebpackPlugin = /** @class */ (function () {
function GenerateFileWebpackPlugin(options) {
this.options = options;
this.name = 'GenerateFileWebpackPlugin';
this.debug(null, '[created]');
}
// noinspection JSUnusedGlobalSymbols
GenerateFileWebpackPlugin.prototype.apply = function (compiler) {
var _this = this;
this.debug(null, '[called]');
compiler.hooks.emit.tapAsync(this.name, function (compilation, callback) {
_this.debug(compilation, '[emit.tapAsync]');
try {
var targetFile_1 = _this.inferTargetFile(compilation);
_this.debug(compilation, '[generating]', targetFile_1);
_this.resolveContent()
.then(function (content) {
var targetDir = path.dirname(targetFile_1);
if (!fs.existsSync(targetDir)) {
fs.mkdirSync(targetDir, { recursive: true });
}
fs.writeFileSync(targetFile_1, content);
_this.info(compilation, '[generated]', targetFile_1);
callback();
})
.catch(function (e) {
_this.fail(compilation, e, targetFile_1);
callback();
});
}
catch (e) {
_this.fail(compilation, e);
callback();
}
});
};
GenerateFileWebpackPlugin.prototype.inferTargetFile = function (compilation) {
if (path.isAbsolute(this.options.file)) {
return this.options.file;
}
if (!compilation.compiler.outputPath) {
// This should never occur in real-life - we catch that case anyways, just because of paranoia
throw new Error('Could not infer target file path: No webpack output path configured.');
}
var outputPath = compilation.compiler.outputPath;
if (!path.isAbsolute(outputPath)) {
// This should never occur in real-life - we catch that case anyways, just because of paranoia
throw new Error('Could not infer target file path: Configured webpack output path is not an absolute path.');
}
return path.resolve(outputPath, this.options.file);
};
GenerateFileWebpackPlugin.prototype.resolveContent = function () {
return __awaiter(this, void 0, void 0, function () {
var contentSource, functionResult;
return __generator(this, function (_a) {
contentSource = this.options.content;
if (isString(contentSource)) {
return [2 /*return*/, contentSource];
}
else if (isBuffer(contentSource)) {
return [2 /*return*/, contentSource.toString()];
}
else if (isPromise(contentSource)) {
return [2 /*return*/, contentSource];
}
else if (isFunction(contentSource)) {
functionResult = contentSource.call();
if (!isString(functionResult) && !isBuffer(functionResult) && !isPromise(functionResult)) {
throw new Error('Unsupported function content source: ' + typeNameOf(functionResult));
}
return [2 /*return*/, functionResult];
}
else {
throw new Error('Unsupported content source: ' + typeNameOf(contentSource));
}
return [2 /*return*/];
});
});
};
GenerateFileWebpackPlugin.prototype.fail = function (compilation, e, targetFile) {
var errorMessage = e instanceof Error ? e.message : e.toString();
var message = '[' + this.name + '] ';
if (targetFile) {
message = message + '[' + path.basename(targetFile) + '] ';
}
message = message + errorMessage;
compilation.errors.push(new Error(message));
};
GenerateFileWebpackPlugin.prototype.debug = function (compilation, logMessage, targetFile) {
if (!this.options.debug) {
return;
}
this.getLogger(compilation).info(this.message(logMessage, targetFile));
};
GenerateFileWebpackPlugin.prototype.info = function (compilation, logMessage, targetFile) {
this.getLogger(compilation).info(this.message(logMessage, targetFile));
};
GenerateFileWebpackPlugin.prototype.getLogger = function (compilation) {
return compilation && compilation.getLogger ? compilation.getLogger(this.name) : console;
};
GenerateFileWebpackPlugin.prototype.message = function (logMessage, targetFile) {
var message = '[' + this.name + '] ';
if (targetFile) {
message = message + '[' + path.basename(targetFile) + '] ';
}
message = message + logMessage;
return message;
};
return GenerateFileWebpackPlugin;
}());
function isString(value) {
return typeof value === 'string' || value instanceof String;
}
function isBuffer(value) {
return typeof value === 'object' && Buffer.isBuffer(value);
}
function isPromise(value) {
return typeof value === 'object' && value instanceof Promise;
}
function isFunction(value) {
return typeof value === 'function';
}
function typeNameOf(value) {
if (typeof value === 'object') {
return value.constructor.name;
}
else {
return typeof value;
}
}
module.exports = generate;