1 files changed, 134 insertions, 0 deletions
diff --git a/packages/integrations/cloudflare/src/parser.ts b/packages/integrations/cloudflare/src/parser.ts
new file mode 100644
index 000000000..d7130ff9d
--- /dev/null
+++ b/packages/integrations/cloudflare/src/parser.ts
@@ -0,0 +1,134 @@
+/**
+ * This file is a derivative work of wrangler by Cloudflare
+ * An upstream request for exposing this API was made here:
+ * https://github.com/cloudflare/workers-sdk/issues/3897
+ *
+ * Until further notice, we will be using this file as a workaround
+ * TODO: Tackle this file, once their is an decision on the upstream request
+ */
+
+import * as fs from 'node:fs';
+import { resolve, dirname } from 'node:path';
+import { findUpSync } from 'find-up';
+import TOML from '@iarna/toml';
+import dotenv from 'dotenv';
+
+function findWranglerToml(
+	referencePath: string = process.cwd(),
+	preferJson = false
+): string | undefined {
+	if (preferJson) {
+		return (
+			findUpSync(`wrangler.json`, { cwd: referencePath }) ??
+			findUpSync(`wrangler.toml`, { cwd: referencePath })
+		);
+	}
+	return findUpSync(`wrangler.toml`, { cwd: referencePath });
+}
+type File = {
+	file?: string;
+	fileText?: string;
+};
+type Location = File & {
+	line: number;
+	column: number;
+	length?: number;
+	lineText?: string;
+	suggestion?: string;
+};
+type Message = {
+	text: string;
+	location?: Location;
+	notes?: Message[];
+	kind?: 'warning' | 'error';
+};
+class ParseError extends Error implements Message {
+	readonly text: string;
+	readonly notes: Message[];
+	readonly location?: Location;
+	readonly kind: 'warning' | 'error';
+
+	constructor({ text, notes, location, kind }: Message) {
+		super(text);
+		this.name = this.constructor.name;
+		this.text = text;
+		this.notes = notes ?? [];
+		this.location = location;
+		this.kind = kind ?? 'error';
+	}
+}
+const TOML_ERROR_NAME = 'TomlError';
+const TOML_ERROR_SUFFIX = ' at row ';
+type TomlError = Error & {
+	line: number;
+	col: number;
+};
+function parseTOML(input: string, file?: string): TOML.JsonMap | never {
+	try {
+		// Normalize CRLF to LF to avoid hitting https://github.com/iarna/iarna-toml/issues/33.
+		const normalizedInput = input.replace(/\r\n/g, '\n');
+		return TOML.parse(normalizedInput);
+	} catch (err) {
+		const { name, message, line, col } = err as TomlError;
+		if (name !== TOML_ERROR_NAME) {
+			throw err;
+		}
+		const text = message.substring(0, message.lastIndexOf(TOML_ERROR_SUFFIX));
+		const lineText = input.split('\n')[line];
+		const location = {
+			lineText,
+			line: line + 1,
+			column: col - 1,
+			file,
+			fileText: input,
+		};
+		throw new ParseError({ text, location });
+	}
+}
+
+export interface DotEnv {
+	path: string;
+	parsed: dotenv.DotenvParseOutput;
+}
+function tryLoadDotEnv(path: string): DotEnv | undefined {
+	try {
+		const parsed = dotenv.parse(fs.readFileSync(path));
+		return { path, parsed };
+	} catch (e) {
+		// logger.debug(`Failed to load .env file "${path}":`, e);
+	}
+}
+/**
+ * Loads a dotenv file from <path>, preferring to read <path>.<environment> if
+ * <environment> is defined and that file exists.
+ */
+
+export function loadDotEnv(path: string): DotEnv | undefined {
+	return tryLoadDotEnv(path);
+}
+function getVarsForDev(config: any, configPath: string | undefined): any {
+	const configDir = resolve(dirname(configPath ?? '.'));
+	const devVarsPath = resolve(configDir, '.dev.vars');
+	const loaded = loadDotEnv(devVarsPath);
+	if (loaded !== undefined) {
+		return {
+			...config.vars,
+			...loaded.parsed,
+		};
+	} else {
+		return config.vars;
+	}
+}
+export async function getEnvVars() {
+	let rawConfig;
+	const configPath = findWranglerToml(process.cwd(), false); // false = args.experimentalJsonConfig
+	if (!configPath) {
+		throw new Error('Could not find wrangler.toml');
+	}
+	// Load the configuration from disk if available
+	if (configPath?.endsWith('toml')) {
+		rawConfig = parseTOML(fs.readFileSync(configPath).toString(), configPath);
+	}
+	const vars = getVarsForDev(rawConfig, configPath);
+	return vars;
+}