| # -*- bazel-starlark -*- |
| load("@builtin//encoding.star", "json") |
| load("@builtin//path.star", "path") |
| load("@builtin//struct.star", "module") |
| |
| def _load(ctx, tsconfig_path, loaded): |
| if tsconfig_path in loaded: |
| return loaded[tsconfig_path] |
| tsconfig = json.decode(str(ctx.fs.read(tsconfig_path))) |
| loaded[tsconfig_path] = tsconfig |
| return tsconfig |
| |
| def _paths(ctx, tsconfig_path, tsconfig, loaded): |
| paths = [tsconfig_path] |
| tsconfig_dir = path.dir(tsconfig_path) |
| if "extends" in tsconfig and tsconfig["extends"]: |
| base = path.join(tsconfig_dir, tsconfig["extends"]) |
| paths.append(base) |
| parent = _load(ctx, base, loaded) |
| if "files" in parent and not tsconfig["files"]: |
| tsconfig["files"] = parent["files"] |
| if "files" in tsconfig: |
| for file in tsconfig["files"]: |
| paths.append(path.join(tsconfig_dir, file)) |
| if file.endswith(".js"): |
| # Add if d.ts version of the file exists. |
| file_dts = path.join(tsconfig_dir, file[:-2] + "d.ts") |
| if ctx.fs.exists(file_dts): |
| paths.append(file_dts) |
| return paths |
| |
| def _scan_inputs(ctx, tsconfig_path, tsconfig, loaded, scanned): |
| if tsconfig_path in scanned: |
| return scanned[tsconfig_path] |
| inputs = {} |
| for fname in _paths(ctx, tsconfig_path, tsconfig, loaded): |
| if fname not in inputs: |
| inputs[fname] = True |
| if "references" in tsconfig: |
| for ref in tsconfig["references"]: |
| refname = path.join(path.dir(tsconfig_path), ref["path"]) |
| if refname not in inputs: |
| inputs[refname] = True |
| reftc = _load(ctx, refname, loaded) |
| for fname in _scan_inputs(ctx, refname, reftc, loaded, scanned): |
| if fname not in inputs: |
| inputs[fname] = True |
| scanned[tsconfig_path] = inputs.keys() |
| return scanned[tsconfig_path] |
| |
| def _scandeps(ctx, tsconfig_path, tsconfig): |
| loaded = {tsconfig_path: tsconfig} |
| scanned = {} |
| inputs = _scan_inputs(ctx, tsconfig_path, tsconfig, loaded, scanned) |
| return inputs |
| |
| tsc = module( |
| "tsc", |
| scandeps = _scandeps, |
| ) |
