chore(build): Remove buildDeps task

scripts/gulpfiles/build_tasks.js

@@ -44,11 +44,6 @@ const PYTHON = process.platform === 'win32' ? 'python' : 'python3';
  */
 const COMPILED_SUFFIX = '_compressed';
 
-/**
- * Dependencies file (used by buildCompiled for chunking.
- */
-const DEPS_FILE = path.join(BUILD_DIR, 'deps.js');
-
 /**
  * Name of an object to be used as a shared "global" namespace by
  * chunks generated by the Closure Compiler with the
@@ -315,82 +310,6 @@ function buildJavaScript(done) {
   done();
 }
 
-/**
- * This task updates DEPS_FILE (deps.js), used by
- * closure-calculate-chunks when determining how to organise .js
- * source files into chunks.
- *
- * Prerequisite: buildJavaScript.
- */
-function buildDeps() {
-  const roots = [
-    TSC_OUTPUT_DIR,
-  ];
-
-  /** Maximum buffer size, in bytes for child process stdout/stderr. */
-  const MAX_BUFFER_SIZE = 10 * 1024 * 1024;
-
-  /**
-   * Filter a string to extract lines containing (or not containing) the
-   * specified target string.
-   *
-   * @param {string} text Text to filter.
-   * @param {string} target String to search for.
-   * @param {boolean?} exclude If true, extract only non-matching lines.
-   * @returns {string} Filtered text.
-   */
-  function filter(text, target, exclude) {
-    return text.split('\n')
-        .filter((line) => Boolean(line.match(target)) !== Boolean(exclude))
-        .join('\n');
-  }
-
-  /**
-   * Log unexpected diagnostics, after removing expected warnings.
-   *
-   * @param {string} text Standard error output from closure-make-deps
-   */
-  function log(text) {
-    for (const line of text.split('\n')) {
-      if (line &&
-          !/^WARNING .*: Bounded generic semantics are currently/.test(line) &&
-          !/^WARNING .*: Missing type declaration/.test(line) &&
-          !/^WARNING .*: illegal use of unknown JSDoc tag/.test(line)) {
-        console.error(line);
-      }
-    }
-  }
-
-  return new Promise((resolve, reject) => {
-    const args = '--closure-path ./build/src ' +
-        roots.map(root => `--root '${root}' `).join('');
-    exec(
-        `closure-make-deps ${args}`, {maxBuffer: MAX_BUFFER_SIZE},
-        (error, stdout, stderr) => {
-          if (error) {
-            // Remove warnings from stack trace to show only errors.
-            error.stack = filter(error.stack, /^WARNING/, true);
-            // Due to some race condition, the stderr parameter is
-            // often badly truncated if an error is non-null, so the
-            // error message might not actually be shown to the user.
-            // Print a helpful message to the user to help them find
-            // out what the problem is.
-            error.stack += `
-
-If you do not see an helpful diagnostic from closure-make-deps in the
-error message above, try running:
-
-    npx closure-make-deps ${args} 2>&1 |grep -v WARNING`;
-            reject(error);
-          } else {
-            log(stderr);
-            fs.writeFileSync(DEPS_FILE, stdout);
-            resolve();
-          }
-        });
-  });
-}
-
 /**
  * This task regenerates msg/json/en.js and msg/json/qqq.js from
  * msg/messages.js.