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e1e1baa1bd
* Make throwOnError=true the new default
* Handle JS errors as part of the RPC request/response flow
* Return a new Result type with .Err on it
This enables constructs on the form:
```handlebars
{{ with transform.ToMath "c = \\foo{a^2 + b^2}" }}
{{ with .Err }}
{{ warnf "error: %s" . }}
{{ else }}
{{ . }}
{{ end }}
{{ end }}
```
Note that the new `Result` type behaves like `template.HTML` (or a string if needed) when printed, but it will panic if in a error state.
Closes #12748
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package warpc
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import (
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_ "embed"
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)
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//go:embed wasm/renderkatex.wasm
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var katexWasm []byte
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// See https://katex.org/docs/options.html
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type KatexInput struct {
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Expression string `json:"expression"`
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Options KatexOptions `json:"options"`
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}
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// KatexOptions defines the options for the KaTeX rendering.
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// See https://katex.org/docs/options.html
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type KatexOptions struct {
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// html, mathml (default), htmlAndMathml
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Output string `json:"output"`
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// If true, display math in display mode, false in inline mode.
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DisplayMode bool `json:"displayMode"`
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// Render \tags on the left side instead of the right.
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Leqno bool `json:"leqno"`
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// If true, render flush left with a 2em left margin.
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Fleqn bool `json:"fleqn"`
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// The color used for typesetting errors.
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// A color string given in the format "#XXX" or "#XXXXXX"
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ErrorColor string `json:"errorColor"`
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// A collection of custom macros.
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Macros map[string]string `json:"macros,omitempty"`
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// Specifies a minimum thickness, in ems, for fraction lines.
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MinRuleThickness float64 `json:"minRuleThickness"`
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// If true, KaTeX will throw a ParseError when it encounters an unsupported command.
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ThrowOnError bool `json:"throwOnError"`
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}
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type KatexOutput struct {
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Output string `json:"output"`
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}
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