48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
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"""Simple utility bazel macros for convenience usage."""
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load("@npm//typescript:index.bzl", "tsc")
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def transpile_js_to_es5(name, js_file):
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"""Transpiles a provided javascript target to es5.
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For testing on IE, shims must be served in es5, this macro can be used to
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transpile es2015 JS shims to es5 for usage in IE testing.
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Example usage:
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transpile_js_to_es5(
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name = "my-file",
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js_file = "@npm//some_package/shim_files/es6_shim_file.js",
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)
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filegroup(
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name = "some_shims_for_tests",
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testonly = True,
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srcs = [
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":my-file",
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...
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]
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)
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"""
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tsc(
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name = name,
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outs = [
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"%s.js" % name,
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],
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args = [
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# Allow JS files to be used for transpiling
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"--allowJs",
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# Skip lib check as pure local javascript transpiling should be done
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"--skipLibCheck",
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# Transpile to ES5
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"--target ES5",
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# Output the transpiled file to the location provided by the name
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"--outFile $(execpath :%s.js)" % name,
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# Transpile the provided js_file
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"$(execpath %s)" % js_file,
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],
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data = [
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js_file,
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],
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)
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