Also create a strict version of the schema

.gitignore

@@ -1,4 +1,5 @@
 docs/lottie.schema.json
+docs/lottie-strict.schema.json
 site/
 __pycache__
 

Makefile

@@ -8,7 +8,7 @@ SOURCE_DIR = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
 OUTPUT_DIR ?= $(CURDIR)/site
 
 .SUFFIXES:
-.PHONY: all install_dependencies docs docs_serve lottie.schema.json validate validate_links
+.PHONY: all install_dependencies docs docs_serve lottie.schema.json lottie-strict.schema.json validate validate_links
 
 
 all: docs
@@ -19,21 +19,31 @@ $(SOURCE_DIR)/docs/lottie.schema.json: $(wildcard $(SOURCE_DIR)/schema/**/*.json
 $(SOURCE_DIR)/docs/lottie.schema.json: $(SOURCE_DIR)/tools/schema-merge.py
 	$(SOURCE_DIR)/tools/schema-merge.py
 
+lottie-strict.schema.json:$(SOURCE_DIR)/docs/lottie-strict.schema.json
+
+$(SOURCE_DIR)/docs/lottie-strict.schema.json: $(wildcard $(SOURCE_DIR)/schema/**/*.json)
+$(SOURCE_DIR)/docs/lottie-strict.schema.json: $(SOURCE_DIR)/tools/schema-merge.py
+	$(SOURCE_DIR)/tools/schema-merge.py --output $(SOURCE_DIR)/docs/lottie-strict.schema.json --strict
+
 docs:$(OUTPUT_DIR)/index.html
 
 $(OUTPUT_DIR)/index.html:$(wildcard $(SOURCE_DIR)/docs/**/*)
 $(OUTPUT_DIR)/index.html:$(SOURCE_DIR)/docs/lottie.schema.json
+$(OUTPUT_DIR)/index.html:$(SOURCE_DIR)/docs/lottie-strict.schema.json
 $(OUTPUT_DIR)/index.html:$(SOURCE_DIR)/tools/lottie_markdown.py
 	$(MKDOCS) build -f $(SOURCE_DIR)/mkdocs.yml -d $(OUTPUT_DIR)
 
 docs_serve:$(SOURCE_DIR)/docs/lottie.schema.json
+docs_serve:$(SOURCE_DIR)/docs/lottie-strict.schema.json
 	$(MKDOCS) serve -f $(SOURCE_DIR)/mkdocs.yml
 
 install_dependencies:
 	$(PIP) install -r $(SOURCE_DIR)/tools/requirements.txt
 
 validate: $(SOURCE_DIR)/docs/lottie.schema.json
+validate: $(SOURCE_DIR)/docs/lottie-strict.schema.json
 	$(SOURCE_DIR)/tools/schema-validate.py
+	$(SOURCE_DIR)/tools/schema-validate.py --schema $(SOURCE_DIR)/docs/lottie-strict.schema.json
 
 
 validate_full:$(OUTPUT_DIR)/index.html

docs/specs/schema.md

@@ -9,4 +9,7 @@ values to jump to the relevant section.
 
 If you want you can also view the [raw schema file](../lottie.schema.json).
 
+There is also a [strict schema file](../lottie-strict.schema.json)
+that disallows properties not covered in the specification.
+
 {json_file}

tools/schema-merge.py

@@ -23,6 +23,8 @@ def join_parts(
                             print(file_item)
                             raise
                     file_schema.pop("$schema", None)
+                    if strict and 'type' in file_schema and file_schema['type'] == "object":
+                        file_schema["unevaluatedProperties"] = False
                     dir_schema[file_item.stem] = file_schema
             defs[subdir.name] = dir_schema
 
@@ -52,11 +54,15 @@ def join_parts(
     default=root / "docs" / "lottie.schema.json",
     help="Output file name"
 )
+parser.add_argument('--strict', dest='strict', action='store_true')
+parser.add_argument('--not-strict', dest='strict', action='store_false')
+parser.set_defaults(strict=False)
 
 args = parser.parse_args()
 input_dir: pathlib.Path = args.input.resolve()
 output_path: pathlib.Path = args.output
 root_path: pathlib.Path = (input_dir / args.root).resolve()
+strict = args.strict
 
 with open(root_path) as file:
     json_data = json.load(file)