@putout/plugin-github/lib/install-bun/index.js

🐊Putout plugin helps with github actions

import {operator, template} from 'putout';

const {
    traverseProperties,
    getTemplateValues,
    __yaml,
} = operator;

const BUN_USES = 'oven-sh/setup-bun@v1';

const BUN = template.ast(`({
    "uses": "${BUN_USES}",
    "with": {
        "bun-version": "latest"
    }
})`);

delete BUN.extra;

export const report = () => 'Install Bun';

export const fix = ({index, stepsPathValue}) => {
    stepsPathValue.node.elements.splice(index + 1, 0, BUN);
};

export const traverse = ({push}) => ({
    [__yaml](path) {
        const {__object} = getTemplateValues(path, __yaml);
        const [stepsPath] = traverseProperties(__object, 'steps');
        
        if (!stepsPath)
            return;
        
        const stepsPathValue = stepsPath.get('value');
        const steps = stepsPathValue.get('elements');
        
        for (const step of steps) {
            const uses = parseUses(step);
            
            if (uses.startsWith(BUN_USES))
                return;
        }
        
        for (const [index, step] of steps.entries()) {
            const uses = parseUses(step);
            
            if (!uses.startsWith('actions/checkout'))
                continue;
            
            push({
                index,
                stepsPathValue,
                path: step,
            });
            return;
        }
    },
});

function parseUses(step) {
    const properties = step.get('properties');
    
    for (const prop of properties) {
        const key = prop.get('key.value').node;
        
        if (key === 'uses')
            return prop.get('value.value').node;
    }
    
    return '';
}