Less language is an extension of css and less4j compiles it into regular css. Less adds several dynamic features into css: variables, expressions, nested rules, and so on. Less was designed to be compatible with css and any correct css file is also correct less file.
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OutOfMemoryError: Java heap space when compiling unwanted source maps #362
We are running into an error, here is the stack trace:
Caused by: java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:2367)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:415)
at java.lang.StringBuilder.append(StringBuilder.java:132)
at java.lang.StringBuilder.append(StringBuilder.java:179)
at java.lang.StringBuilder.append(StringBuilder.java:72)
at com.github.sommeri.sourcemap.SourceMapGeneratorV3.addValuesList(SourceMapGeneratorV3.java:367)
at com.github.sommeri.sourcemap.SourceMapGeneratorV3.addSourceContentMap(SourceMapGeneratorV3.java:339)
at com.github.sommeri.sourcemap.SourceMapGeneratorV3.appendTo(SourceMapGeneratorV3.java:314)
at com.github.sommeri.less4j.core.output.SourceMapBuilder.toSourceMap(SourceMapBuilder.java:135)
at com.github.sommeri.less4j.utils.CssPrinter.toSourceMap(CssPrinter.java:1052)
at com.github.sommeri.less4j.core.ThreadUnsafeLessCompiler.createCompilationResult(ThreadUnsafeLessCompiler.java:120)
at com.github.sommeri.less4j.core.ThreadUnsafeLessCompiler.doCompile(ThreadUnsafeLessCompiler.java:88)
at com.github.sommeri.less4j.core.ThreadUnsafeLessCompiler.compile(ThreadUnsafeLessCompiler.java:76)
at com.github.sommeri.less4j.core.ThreadUnsafeLessCompiler.compile(ThreadUnsafeLessCompiler.java:65)
at com.github.sommeri.less4j.core.DefaultLessCompiler.compile(DefaultLessCompiler.java:44)
at utils.applications.ThemeCompiler.compileThemeContent(ThemeCompiler.java:186)
We don't really care about source map, we don't actually have any, we are just compiling a lot of tiny less files. I tried disabling the source map altogether:
LessCompiler.Configuration configuration = new LessCompiler.Configuration();
configuration.getSourceMapConfiguration().setLinkSourceMap(false);
LessCompiler.CompilationResult result = lessCompiler.compile(source, configuration);
Hello,
We are running into an error, here is the stack trace:
We don't really care about source map, we don't actually have any, we are just compiling a lot of tiny less files. I tried disabling the source map altogether:
But when I read the code, the option is read in "handleSourceMapLink": https://github.com/SomMeri/less4j/blob/bca5cb262c018f38ea8c58175df344c7d2345148/src/main/java/com/github/sommeri/less4j/core/ThreadUnsafeLessCompiler.java#L201
Which is right after the "toSourceMap" line where it crashes: https://github.com/SomMeri/less4j/blob/bca5cb262c018f38ea8c58175df344c7d2345148/src/main/java/com/github/sommeri/less4j/core/ThreadUnsafeLessCompiler.java#L177-L179
Is it an error in less4j? Should the option be read earlier so that it doesn't concatenate Strings that won't be used later?
Fabien